The volume of gas produced by six tablets would be twice the volume produced by three tablets, or 600 cm³ x 2 = 1200 cm³.
Definition of a gas's volumeUntil they are enclosed in a container, gases lack a definite shape or volume. Gases can expand and contract as they are forced into various container sizes and shapes because of the way their molecules spread out and move randomly.
The volume of the container in which a gas is contained can be used to define the volume of the gas itself.
The volume of a gas reduces as the molecules are crammed closer together when it is compressed. A gas's volume rises when it expands.
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Answer:
1200 cm³.
Explanation:
Consider the orbital diagram
shown. Which electron rule is
broken in the diagram?
1
1s 2s
2p
A. Aufbau Principle
B. Hund's Rule
C. Pauli Exclusion Principle
The electron rule is broken in the diagram is: (c) Pauli Exclusion Principle.
What is electron?An electron is a subatomic particle with a negative electric charge. It is found in atoms, and is the main component of electricity. Electrons are incredibly small, measuring only a fraction of a nanometer, and they are around 2000 times lighter than the smallest atom. Electrons are governed by the laws of quantum mechanics and they are move around the nucleus of an atom in discrete orbits. Electrons are responsible for chemical bonding between atoms, and they are essential for the formation of molecules.
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How many moles is 1.5 x10 20?
2.49 x [tex]10^{-4}[/tex] moles is equal to 1.5×[tex]10^{20}[/tex]. The number of moles is equal to the number of molecules divided by Avogadro's number, 6.022×[tex]10^{23}[/tex].
This means that 1.5×[tex]10^{20}[/tex]moles are equal to
1.5×[tex]10^{20}[/tex]/6.022×[tex]10^{23}[/tex]
0.24908×[tex]10^{-3}[/tex]
2.49 x [tex]10^{-4}[/tex] moles.
Avogadro's number: Avogadro's number is a constant used in chemistry to represent the number of atoms or molecules in a mole of a substance. It is equal to 6.022 x [tex]10^{23}[/tex]. Or we can say that Avogadro's number is, the number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214076 × 1023. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction.
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Is it true that only 2 ATP are formed during anaerobic respiration?
Pyruvate is converted to lactate in anaerobic conditions by anaerobic glycolysis. During anaerobic respiration, two ATP molecules are produced.
What is the primary step in glycolysis?
The method by which glucose is metabolized to produce energy is known as glycolysis. It generates water, ATP, NADH, and two pyruvate molecules. It doesn't need oxygen to happen because it happens in a cell's cytoplasm. Both in aerobic and anaerobic organisms, it happens.
How is glycolysis referred to?
Gustav Embden, Otto Meyerhof, & Jakub Karol Parnas identified the Embden-Meyerhof-Parnas (EMP) pathway, which is the most typical kind of glycolysis. The Entner-Doudoroff pathway and several heterofermentative & homofermentative pathways are examples of additional pathways that are included in the term "glycolysis."
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In anaerobic circumstances, anaerobic glycolysis converts pyruvate to lactate. Two ATP molecules are created during anaerobic respiration.
What is the first stage of glycolysis?The process of converting glucose into energy is known as glycolysis. Water, ATP, NADH, and two pyruvate molecules are produced. It does not require oxygen to occur since it occurs in the cytoplasm of a cell. It occurs in both aerobic and anaerobic species.
How is glycolysis defined?The Embden-Meyerhof-Parnas (EMP) route, which is the most common kind of glycolysis, was discovered by Gustav Embden, Otto Meyerhof, and Jakub Karol Parnas. Additional processes included in the word "glycolysis" include the Entner-Doudoroff pathway and numerous heterofermentative and homofermentative pathways.
Here,
Anaerobic glycolysis converts pyruvate to lactate under anaerobic conditions. During anaerobic respiration, two ATP molecules are produced.
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what is the total random kinetic energy of all the molecules in one mole of hydrogen at a temperature of 300k
The total random kinetic energy of all the molecules in one mole of hydrogen at a temperature of 300k is 3741.3 J.
Given temperature (T) = 300K
The number of moles of hydrogen given are (n) = 1
Molecular weight of hydrogen (M) = 1g
Let the kinetic energy = KE
We know that Kinetic Energy (KE) = 1.5nRT where R = Rydbergs constant
So, KE (total) = 1.5nRT,
the total random kinetic energy is KE = (1.5) x (1) x (8.314) x (300) = 3741.3J/mol
The energy of motion is known as kinetic energy, and it can be observed in the motion of objects or subatomic particles. Examples of kinetic energy in action include a person walking, a baseball soaring through the air, a piece of food falling from a table, and a charged particle in an electric field.
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How many mol ratios can be obtained from the following chemical equation? Na2s + cd(No3)2 ———-> 2 NaNo3 +cds
12mol ratios can be obtained .
The net ionic equation is a chemical equation that only depicts the elements, compounds, and ions that are directly involved in the chemical process.
As previously stated, we employ net ionic equations to highlight the molecules that change throughout the reaction. It makes it simple to identify the active molecules in a reaction since they are the only ones in the equation.
Fill in the blanks with the balanced molecular equation.
For each substance, write the state (s, l, g, aq).
Break down strong electrolytes into ions (the complete ionic equation).
Remove the spectator ions from both sides of the full ionic equation.
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draw a diagram of the structure of the following atoms and state their electron arrangement:
(i) Mg
(ii)Ca
The diagrams of the arrangement of the electrons in calcium and magnesium have been shown in the image attached to this answer. There are two electrons in the valence shell of calcium.
How are the electrons arranged?We know that the electrons are the subatomic particles that we can be able to see in the shells of the atom. It is important that we ought to know that the electrons are the particles that are known to be responsible for the reactivity of the atom.
The number of the electrons that we can find in the atom would depend on the number of the protons that we have in the nucleus of the atom and this is because for the atom to be electrically neutral then we would have to have the same number of electrons and protons being in the atom as we know.
It is clear that calcium is a member of group two of the periodic table and that magnesium is also a member of group two of the periodic table.
The structures for calcium would have Ca and two dots while that of magnesium would have Mg and two dots.
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A chemist is studying the composition of a sample of ocean water. He gently heats the sample to evaporate the water, leaving him with the solid substances that had been dissolved in the sample. Next, he performs a series of procedures to separate the solid substances from each other. Finally, he measures how much of each solid he has obtained. What substance would he probably have the most of
The substance that he will have the most will be sodium chloride.
More than 70% of the surface of the Earth is covered by seawater, the liquid that makes up the oceans and seas. 96.5 percent of seawater is made up of pure water, 2.5 percent salt, and minor amounts of dissolved inorganic and organic compounds, particles, and a few atmospheric gases.
When a chemist analyzes the composition of a sample and heats it to cause the water to evaporate, he is left with the solid substances that had been dissolved in the sample. Sodium chloride is the most significant salt that is created by ocean water. He next goes through a series of steps to separate the solid materials from one another. The highest substance found in ocean water, according to his measurements, is salt, specifically sodium chloride.
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A 0.470-g chunk of sodium metal is cautiously dropped into a mixture of 50.0 g of water and 50.0 g of ice, both at 0°C. The reaction is given below.
2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g) ΔH = -368 kJ
Will all the ice melt? The enthalpy of fusion for ice is 6.02 kJ/mol.
What is the amount of heat released?
_____ kJ
What is the amount of heat required to melt 50.0 g of ice?
_____ kJ
Assuming the final mixture has a specific heat capacity of 4.18 J/g · °C, calculate the final temperature.
_____kJ
Ice will not melt as we need 16.72 KJ of heat but we have only 3.76 KJ
What is the enthalpy of fusion?In thermodynamics, the enthalpy of fusion can be described as the change in its enthalpy resulting from giving energy, heat, to a specific amount to change its state from a solid to a liquid.
Given the reaction is 2 Na (s) + 2 H₂O(l) → 2 NaOH (aq) + H₂ (g)
Given the mass of sodium = 0.470 g
The moles of sodium = 0.470/23 = 0.020 mol
Given that two moles of sodium (Na) release heat = 368 KJ
Heat released by 0.020 mol of sodium (Na) = (368/2) × 0.020 = 3.76 KJ
Given the mass of ice = 50g
The number of moles = 50/18 = 2.78 mol
For melting, one mole of ice heat is required = 6.02 kJ/mol.
For 2.77 mol of ice = 6.02 × 2.78 = 16.72 KJ
But we have only 3.76 KJ of heat therefore, the ice will not melt.
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Indicate whether each of the following molecules is capable of geometrical (cis-trans) isomerism. Check all that apply. O 1,3-dichloro-2-butene O 1,4-dichlorobenzene O 1,1-dichloro-1-butene O 4,5-dimethyl-2-pentyne
1,3-dichloro-2-butene and 1,1-dichloro-1-butene.Geometrical isomerism, also known as cis-trans isomerism, occurs when a molecule has two or more structural isomers that differ in the spatial arrangement of the atoms.
Cis-trans isomerism is only possible when the molecule has at least one carbon-carbon double bond. In this type of isomerism, the two isomers differ in the orientation of the substituent groups around the double bond. 1,3-dichloro-2-butene and 1,1-dichloro-1-butene both contain a carbon-carbon double bond and are therefore capable of geometrical isomerism. 1,4-dichlorobenzene does not contain a carbon-carbon double bond and therefore is not capable of geometrical isomerism. 4,5-dimethyl-2-pentyne also does not contain a carbon-carbon double bond and is therefore not capable of geometrical isomerism.
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 (Question) How many atoms are in 3 grams of Cu?
(20 points)
3 grams of Cu = 6.022 x 10^23 atoms of copper.
Answer:
2.84 × 10^22 atoms
Explanation:
To calculate the number of atoms in 3 grams of Cu, we can use avogadro's constant where:
[tex]1 \: mole = 6.02 \times 10 {}^{23} \: atoms[/tex]
Firstly, we have to calculate the number of moles in 3 grams of Cu. The formula to calculate moles is:
[tex]moles = \frac{mass}{molar \: mass} [/tex]
the mass = 3g and the molar mass = 63.55 (this value can be found in the periodic table)
Substitute the values in formula:
[tex]moles = \frac{3}{63.55} [/tex]
[tex]moles = 0.0472[/tex]
Now use the number of moles to convert to atoms using avogadro's number, where x is the unknown number of atoms we want to find:
[tex]1 \: mole : 6.02 \times 10 {}^{23} \: atoms[/tex]
[tex]0.0472 \: moles : x \: atoms[/tex]
Cross multiply and equate to solve for x:
[tex]1 \times x = 6.02 \times 10 {}^{23} \times 0.0472[/tex]
[tex]x = 6.02 \times 10 {}^{23} \times 0.0472[/tex]
[tex]x = 2.84 \times 10 {}^{22} \: rounded \: to \: 3sf[/tex]
Hence, there are 2.84 × 10^22 atoms in 3 grams of Cu
if a researcher wanted to temporarily denature a protein but wanted to be sure it would refold, which of the following methods or substances would be most appropriate
If a researcher wanted to the temporarily denature a protein but wanted to be sure it would refold, the method or the substances would be most appropriate is the urea.
The denature is defined as the process of the modification of the molecular structure of the protein. In this method it involves the breaking of the many weak linkage or the bonds in the protein molecules. It is responsible for highly ordered of the structure of the protein in the natural of state.
Thus, the urea is the appropriate substances , if the researcher wanted to the temporary denature the proteins.
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Which of thee would NOT
be conidered a biome?
A. A region that ha everal grouping of
the ame plant communitie. B. A region that ha everal grouping
of the ame animal communitie. C. A mall habitat that contain it own
ecoytem (uch a a tree tump). D. A large area of the Earth that ha a
imilar climate
A large area of the Earth that has a similar climate is not considered a biome.
Hence, option D is correct.
Scientists can identify a biome by defining the range of temperatures, the kind of soil, the amount of light, and the amount of water that are distinctive to that location. These factors create niches for particular species.A biome is a community made up of all the habitats in a given region and climate, whereas a habitat is the place where a group of one type of organism (a population) resides. Different creatures live in many types of biomes.Scientists disagree on the exact number of biomes that exist on earth, therefore we will focus on the six most significant ones: freshwater, marine, desert, forest, grassland, and tundra.
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A 15.0-mL sample of 0.100 M Ba(OH)2 is titrated with 0.125 MHCl.
Calculate the pH for different points throughout the titration curve and make a sketch of the curve.
The pH of a 0.100 M Ba(OH)2 solution is decreased to 6.51 when 15.0 mL of 0.125 M HCl is added. The titration curve of the reaction is a decreasing graph, with the pH decreasing as the volume of the HCl added increases.
Volume of HCl Added (mL) | pH
--------------------------|-----
0.0 | 12.32
2.5 | 10.98
5.0 | 9.81
7.5 | 8.79
10.0 | 7.94
12.5 | 7.18
15.0 (endpoint) | 6.51
The pH of a 0.100 M Ba(OH)2 solution is decreased to 6.51 when 15.0 mL of 0.125 M HCl is added. The titration curve of the reaction is a decreasing graph, with the pH decreasing as the volume of the HCl added increases.
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how many liters of a 60% acid solution must be mixed with a 15% acid solution to get 360 L of a 50% acid solution
x + (360 - x) = 360 * 0.50
where x is the amount of the 60% acid solution.
Solving for x, we get: x = 360 * 0.50 - 360 x = 180
Therefore, you will need to mix 180 L of the 60% acid solution with 180 L of the 15% acid solution to get 360 L of a 50% acid solution.
What is acid?Acid is a substance that has a pH level of lower than 7.0 and is capable of corroding or dissolving other substances. It is usually found in aqueous solutions and is a highly reactive substance. Examples of acid include sulfuric acid, hydrochloric acid, nitric acid and acetic acid. These are used in a variety of industries such as food production, industrial cleaning and chemical engineering.
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Which of the following could account for the weakening of hurricanes when they reach the Atlantic Ocean? Ocean waters in the Atlantic . .
A.) decrease in temperature.
B.) increase in temperature.
C.) decrease in salinity.
D.) increase in salinity.
A decrease in temperature could account for the weakening of hurricanes when they reach the Atlantic Ocean. hence option A is the correct answer.
How is Hurricane formed?There must be warm ocean water and wet, humid air in the area for one to form. When humid air flows upward at a low-pressure zone over warm ocean water, water is released from the air, resulting in storm clouds. The air in a hurricane rotates as it rises.
Hurricanes begin with the evaporation of warm seawater, which causes water to be pumped into the lower atmosphere. When converging winds collide and turn upwards, this humid air is pulled aloft.
Hurricanes arise when warm, moist air rises over sea. Cooler air replaces the rising air. Large clouds and thunderstorms continue to form as a result of this process. Because of the Coriolis Effect, these thunderstorms continue to expand and begin to rotate.
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How many oxygen atoms are in 2.50 L of oxygen?
Answer:
There are 8.30x104-24 atoms of oxygen in 2.50 mol of oxygen gas. There are 7.53x10*23 atoms of oxygen in 2.50 mol of oxygen gas.
Given that 1 kWh = 3. 6 MJ and that 1 Btu = 1055 J, show that 1 kWh = 3412 Btu.
Given that 1 kWh = 3. 6 MJ and that 1 Btu = 1055 J, It is shown that 1 kWh = 3412 Btu.
1 kilowatt (kWh) = 3.6 mega Joules (MJ)
1 British thermal unit (Btu) = 1055 Joules (J)
As we know that:
1 MJ = 1000000 J
Since
1 kWh = 3.6 x 1000000 J
Calculate for 1 J
1 J = 1 ÷ 1055 Btu
1 kWh = 3.6 x 1000000 x (1 ÷ 1055) Btu
1 kWh = 3412.32 Btu
So it is calculated that 1 kilowatt (kWh) is equal to 3412 British thermal units (Btu).
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2. Explain the relationship between the key terms in
each of the following pairs.
a. direct pressure and indirect pressure
b. goal and action plan
If someone who look up to does anything that makes you want to do something, this is known as direct pressure directly from the other person's mouth. The plan you use to accomplish the goal it your activity.
Describe pressure.The Standard unit for pressures seems to be the pascal (Pa), which is equal to one newton / square meter (N/m2) of pressure is defined of surface. An object's pressure is inversely related to its force and proportional to both
Why does pressure exist?Pressure is created by molecules moving quickly and crashing into the container's walls. The quantity and intensity of molecular collisions in a given region determine the pressure there.
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Openings in the leaves through which gases enter and leave
Answer:
Stomata
Explanation:
Stomata are epithelial cell structures found in tree leaves and needles that help promote plant growth and exchange carbon dioxide and water with the surrounding environment.
Stomata are tiny holes in the epidermis of leaves.
Stomata allow for gaseous exchange as well (oxygen and carbon dioxide).
After watching the 2nd video, select the correct results to fill in the chart below:
what am I doing wrong
KI - Ionic compound, KCl -Ionic compound,
C₆H₁₂O₆ - Covalent compound, C₆H₄Cl₂ - Covalent compound,
KNO₃ - Ionic compound, C₆H₅COOH - Covalent compound
CH₃COOH - Covalent compound, Paraffin wax - Covalent compound
HCl - Covalent compound
What are ionic and covalent compounds?Ionic compounds are formed from the interaction between cation ions and anions. A cation of an atom can be described as an electropositive ion and can donate valence electrons. Similarly, anions of an atom are electronegative ions and can accept electrons.
In an ionic compound, there is a complete transfer of electrons in the formation of an ionic bond, therefore, there exists an electrostatic force of attraction between the ions that forms a strong bond.
In a covalent compound, there is the mutual sharing of electrons in the covalent bonds. The shared electrons are hard to give away as nuclei of two atoms together share the electrons and create a bond stronger.
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the efficiency of the turbines and generators is 80%
calculate the useful output energy transfer from the hydroelectric power station in 1 minute
use your answer to part (b)
Which of the following is a molecular compound that produces H+ ions when dissolved in water?
a. H2SO4
b. Hg(NO3)2
c. CH4
d. NaC2H3O2
Option - a is correct answer, H₂SO₄ is a molecular compound that produces H⁺ ions when dissolved in water.
What constitutes a molecular compound example?Molecule-shaped inorganic substances are known as molecular compounds. Examples include common compounds like water (H₂O) and carbon dioxide (CO₂). When compared to ionic compounds like sodium chloride, these compounds are very different (NaCl).
Molecules that have a formula that reflects the number of atoms actually bound together in the molecule make up a molecular compound. The bonds between the atoms are joined to form a distinct shape, which is determined by the bond lengths and angles.
Acid produces proton when there is water present.
H₂SO₄ + H₂O → H₃O⁺ + HSO₄⁻
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A vitamin supplement was found to weigh 900 mg. It contained 50. 51% fluorine, and the remaining amount was iron. What mass of each element could be recovered from this vitamin?
A vitamin supplement is a dietary supplement containing one or more essential vitamins, typically in the form of a pill, capsule, or tablet.
What are Vitamins?
Vitamins are a group of organic compounds that are essential for normal cellular functioning. They are required for a wide range of bodily functions, such as metabolism, growth, development, and immunity. They can be found naturally in food sources or taken as dietary supplements. There are 13 essential vitamins, including vitamins A, C, D, E, K, and the B vitamins.
The mass of fluorine that can be recovered from the vitamin is 455.9 mg (50.51% of 900 mg). The mass of iron that can be recovered from the vitamin is 444.1 mg (the remaining amount of 900 mg).
To calculate this, we need to use the percent composition formula:
Mass of Element = (Percent Composition/100) x Total Mass
Mass of Fluorine = (50.51/100) x 900 mg = 455.9 mg
Mass of Iron = (100 - 50.51)/100 x 900 mg = 444.1 mg.
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What happens to molecules when they move faster?
When molecules move faster, they increase their kinetic energy.
What is Kinetic energy?
Kinetic energy is essentially the energy of motion. It is the type of energy that an object possesses as a result of its motion. It is commonly defined as the work required to accelerate a given mass body from rest to its stated velocity. Kinetic energy is directly related to the object's mass and the square of its velocity.
This increase in kinetic energy causes the molecules to vibrate more rapidly, resulting in an increase in temperature. As molecules move faster, they also collide with each other more frequently, leading to more chemical reactions.
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In a titration experiment, a 12.5 mL sample of 1.75 x 10^-2 M Ba(OH) 2 just neutralized 14.5 mL of HNO 3 solution. Calculate the molarity of the HNO 3 solution.
The number of moles must be equal, the ratio of the molarity of each must be equal to the ratio of the volumes used.
What is experiment?An experiment is a procedure or set of procedures used to test a hypothesis or explore a cause and effect relationship. It is a scientific method of investigation in which the investigator manipulates one or more independent variables and measures the subsequent effect on one or more dependent variables. Experiments are conducted to answer questions, test theories, and gain insight into cause-and-effect relationships.
The molarity of the HNO 3 solution can be calculated using the equation:
Molarity of HNO3 = (volume of HNO3 * molarity of Ba(OH)2) / volume of Ba(OH)2
Molarity of HNO3 = (14.5 mL * 1.75 x 10^-2 M) / 12.5 mL
Molarity of HNO3 = 1.4 x 10^-2 M
This equation works because the number of moles of HNO3 neutralized by the Ba(OH)2 must be equal to the number of moles of Ba(OH)2 used. The number of moles of each can be determined by multiplying the molarity of each by the volume used, and since the number of moles must be equal
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What happens to the reactivity as you move from left to right?
The reactivity of the element in the periodic table as me move from the left to right in the period it will decreases first and then it will increases.
In the periodic table , for the metals the reactivity of the decreases as we move across the period from left to the right. in the group it will increases as we move from the top to bottom.
In the periodic table for the non metals, the reactivity will increases as we move from left to the right in a period. in the group it will decreases as we move from top to the bottom.
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You have been given a transparent liquid that could be a solution or a colloid. What is the test you
can perform to confirm which type of mixture it is? What is the technical name for this test?
Answer: Filterability Test
Explanation: This involves filtering the liquid through a filter paper to see if the particles pass through or are retained on the paper. If the particles pass through, the liquid is likely a solution. If the particles are retained, the liquid is likely a colloid. The technical name for this test is the separation test.
Answer:
One way to determine whether a transparent liquid is a solution or a colloid is to use the Tyndall effect. The Tyndall effect, also known as the Tyndall scattering, is a phenomenon that occurs when a beam of light passes through a colloidal system (a mixture in which one substance is dispersed evenly throughout another). When this happens, the light is scattered by the particles in the colloidal mixture, causing the mixture to appear hazy or cloudy. In contrast, if the transparent liquid is a true solution (one in which the solute is completely dissolved in the solvent), the light will pass through it without being scattered, and the solution will appear clear.
To perform the Tyndall effect test, you would need a light source (such as a flashlight or a laser pointer) and a dark room or area. Place the transparent liquid in a clear container, and shine the light through it. If the light is scattered by the particles in the mixture, it will be visible as a bright beam or spot on the opposite side of the container. If the light passes through the mixture without being scattered, it will appear as a continuous, unbroken beam.
There are other tests that can be used to distinguish between solutions and colloids, such as the filterability test and the centrifugation test. However, the Tyndall effect test is one of the most straightforward and reliable methods for making this distinction.
Explanation:
Increasing the amplitude means you are increasing the ___ of a wave.
A)wavelength
B)wave speed
C)frequency
D)energy
Increasing the amplitude means you are increasing the energy of a wave option -D is correct answer.
Just what is amplitude?The distance between the wave's base and its crest is its amplitude. It represents the furthest the vibrating body has traveled.
As the vibration of the sound particles increases, the amplitude length also grows. The intensity and energy of the sound particle particles increase as a result. The sound is louder as a result of the increased energy.
The energy increases with increasing amplitude. In conclusion, waves carry energy. Their frequency and amplitude are related to the amount of energy they carry. Energy increases with frequency and amplitude, respectively, as they both rise.
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Question 4
3 pts
Which if the following elements will not reach an octet when in a bond?
Calcium
O Lithium
Magnesium
O Carbon
Ouestion 5
Lithium has a valence of 1, so it will not usually reach an octet in a bond. It tends to form ionic bonds, in which there is only one electron transfer, rather than two or more which would be required to reach an octet.
What is Lithium?Lithium is a soft, silver-white metal that is the lightest of all alkali metals. It is a key component in many batteries, and is also used in a variety of other applications. It has a low reactivity, and is relatively stable when exposed to air and water. In its elemental form, Lithium is a highly flammable, corrosive metal that is rarely found in its pure form in nature. It can be found in minerals such as lepidolite and spodumene, and is commonly mined from salt flats and brine pools.
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The heat of vaporization for water is 40.7 kJ/mol. How much heat energy must 150.0 g of water absorb to boil away completely
The heat of vaporization for water is 40.7 kJ/mol. the heat energy must 150.0 g of water absorb to boil away completely is 6106 kJ.
The expression is given as :
q = m ΔH
where ,
q is heat energy
m is the mass
ΔH is the heat of the vaporization.
q = heat = ?
m = mass = 150 g
ΔH = heat of vaporization = 40.7 kJ/mol
q = 150 × 40.7
q = 6106 kJ
Thus , if the heat of vaporization is 40.7 kJ/mol ,the heat energy required for 150 g of water absorb to boil away completely is 6106 kJ.
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