Answer:
For a cat name does matter as it keeps a charm when ever we call the name out. So it needs to be cherished as by a name so if it was me i would name it as Chinky.
I need help pls Where does it belong to?
There are 2 grams of sulfur and 0.45 grams of copper. What is the
percent composition of coppper in the sample.
A. 18.3 %
B. 5.44 %
C. 81.6 %
D. 1.25%
Answer:
18.3%
Explanation:
Add the numbers together, and then take the number of grams of the substance, in this case copper, not coppper lol. divide the .45 by 2.45 to get 18.3
You are running late to school and need to go 1,500 m in 10 minutes. What speed will you travel?
10 m/min
15 m/min
150 m/min
O 1 m/min
Answer:
15 m/min
Explanation:
You take the 1500 divide by 10 and your answer is 15
Two cars travel next to each other. One speedometer reads
20 meters per second and the other reads 72 kilometers per
hour. If arrows represent speed, which pair of arrows
represents the relationship of speeds of these two cars?
The blue arrow is always the 20 meters per second car.
PLEASE HELP
Answer:
The pair of arrows which represents the relationship of speeds of the two cars is;
The second option as shown in the attached drawing
Explanation:
The given parameters are;
The reading on the speedometer of one car = 20 m/s
The reading on the speedometer of the other car = 72 km/h = 20 m/s
The blue arrow = 20 m/s
Therefore, given that the speeds of both cars are equal (20 m/s = 72 km/h = 20 m/s), the pair of arrows that represent the relationship of speeds of the two cars is two equal length blue arrows which is the second option
The attached diagram showing the pair of arrows that represents the relationship of speeds of the two cars is drawn using Microsoft Visio.
Which of the following molecules has a tetrahedral shape?
A. SiH4
B. PCI3
C. BCI3
D. H20
Answer:
SiH4
Explanation:
4 hydrogens serve a the base and the Si is on top which forms a tetrahedral shape.
In what ways might the Ring of Fire have
changed in shape and size throughout time?
Explanation:
this question tion is so hard sorry but I can't do is sorry
True or false A recent investigation found relatively high levels of the metalloid
arsenic in samples of apple juice. This would not be harmful
because arsenic is a stable metalloid.
Answer:
False
Explanation:
I took the quiz and got it right
Soil with high amounts of
_____ is acidic.
Magnesium
Potassium
Hydrogen Ions
Calcium
Answer:
C. Hydrogen Ions.
Explanation:
The pH level of soils is measured based upon the acidity or basicity level in the soil. The pH scale usually measures between 0-14. 7 is the neutral pH level of soil and a pH level below 7 is considered acidic and above 7 is alkaline.
So, soil with a high amount of hydrogen ions (H+) will be considered acidic. As the amount of hydrogen ions increases in the soil, the pH level of the soil decreases, making it acidic.
Therefore, option C is correct.
What are half-reactions?
O A. Equations showing which elements are oxidized and which are
reduced
O B. Equations showing the electronegativities of atoms in a reaction
O C. Equations showing what compounds are involved in a reaction
O D. Equations showing only the ions involved in a net ionic equation
Answer:
A
Explanation:
A Equations showing which elements are oxidized and which are
Answer:
A.
Explanation:
Equations showing which elements are oxidized and which are
reduced
Something that causes a response in an organism is called a(n) _____.
How does a rock
Wither? Explain.
First, it combines with carbon dioxide in the soil to form a weak acid called carbonic acid. ... Carbonic acid slowly dissolves away minerals in rock, especially the carbonate minerals that make up limestone and marble. The weak acid decomposes the insoluble rock into watersoluble products that move into the groundwater.
what elements comprise the largest portion of Earth's atmosphere?
Answer:
Nitrogen and Oxygen make up 99% of the Earths atmosphere. Then Argon makes up the rest of the atmosphere.
Please help outttt:(
Explanation:
1)
2Fe+3Cl2 →2FeCl3
2)
CH4+2O2 → CO2 +2H2O
3)
SnO2+2H2 →2H2O +Sn
4)
2KOH + H2SO4 → K2SO4+2H2O
How many grams of hydrogen peroxide are needed to produce 1.30 moles of oxygen gas?
2H2O2=2H2O+O2
Answer:
12.736 grams of hydrogen peroxide
Explanation:
1) Which electrons are involved in bonding between atoms?|
Answer:
VALENCE ELECTRONS are involved in the bonding of atoms
Explanation:
Hope that helps
Could someone help me with this thank you!
Answer:
The answer is D
I searched it up to verify.
Answer: I think the possible answer is B or D
Explanation: There are few of the energies like: Gravitational, electrical, Chemical.....
how did leeuwenhoek discover bacteria
Answer:
Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.
Explanation:
Hope this helps and have a great day :)
What is the name of this compound S2I4?
Answer:
Di Sulphur tetraiodide is the chemical compound with the formula S2I4
Explanation:
Which type of combination is a mixture?
A.
electrical
B.
chemical
C.
physical
D.
thermal
Answer:
C. physical
Explanation:
A mixture is a physical combination. Mixtures are combinations of compounds and molecules without any chemical reaction taking place.
Mixtures have the following properties:
They have an indefinite composition i.e they consist of two or more elements and or compounds in any proportion by massTheir constituents retains their identities i. e physical property is retained. Their constituents reacts differently to changed conditions. They are easily separated into constituents by physical methodsHow many moles are 21.67 L of NH4CI?
Answer:
0.967mole
Explanation:
Given parameters:
Volume of NH₄Cl = 21.67L
Unknown:
Number of moles = ?
Solution:
If we assume that the volume was taken at standard temperature and pressure,
Then;
Number of moles = [tex]\frac{volume }{22.4L}[/tex]
Number of moles = [tex]\frac{21.67}{22.4}[/tex] = 0.967mole
NaOH+HCL=NaCL+H2O
what is the total number of grams of h2o produced when 116 grams of the product NaCL is formed from 80 grams of NaOH and 72 grams of HCL?
A)9.0. B)18.o. C)36.0 D54g
which type of clouds are shown?
cirrocumulus
cumulonimbus
cumulus
stratus
Explanation: cirrocumulus
How many moles are there in 2.43e+21 molecules of carbon dioxide?
Moles of Carbon dioxide : n = 4.037 x 10⁻³
Further explanationGiven
2.43 x 10²¹ molecules of Carbon dioxide
Required
Moles
Solution
1 mol = 6.02 x `10²³ particles(molcules, atoms, ions)
Can be formulated :
N = n x No
n = moles
No = Avogadro's number 6.02 x `10²³
moles of Carbondioxide :
n = N/No
n = 2.43 x 10²¹ / 6.02 x `10²³
n = 4.037 x 10⁻³
A chemist is studying the properties of a gas under various conditions. He observes that when the gas is at room temperature and low pressure, it behaves as an ideal gas. When the gas is cooled to 10 kelvin and is placed under high pressure, however, it deviates significantly from an ideal gas. Explain these observations
Answer:
An ideal gas is a theoretical concept and a real gas behaves in an ideal manner under conditions which includes a high temperature and a low pressure such that the gas has high kinetic energy, and the intermolecular forces between the molecules are weak
The Ideal Gas Law is P·V = n·R·T
Where;
P = The pressure of the gas
V = The volume of the gas
n = The number of moles of the gas
R = The Universal Gas Constant
T = The temperature of the gas
For a gas cooled to 10 Kelvin and placed under high pressure, the interaction between individual gas molecules increases, and the kinetic energy of the gases is much lower and more comparable to the inter molecular forces between the gas molecules, which in turn produces observable changes from the initial ideal behavior of the gas such that the gas behavior deviates from the Ideal Gas Laws appreciably and are better modelled by the Van der Waals Equations which takes into account, the volume the gas particles occupy and the intermolecular forces between the molecules
The Van der Waals equation is presented as follows;
[tex]P = \dfrac{R \cdot T}{V - b} - \dfrac{a}{V^2}[/tex]
Where;
V = The molar volume
a = The gas constant a represents the attractive forces between the gas particles
b = Represent the volume occupied by the particles of the gas
Explanation:
Answer: A, B, & C
Explanation:
A. The ideal gas model assumes that gas particles experience no intermolecular attractions and these forces cause the gas to deviate from ideal behavior.
B. At very low temperatures, gas particles move slowly.
C. At very high pressures, gas particles are very close together.
Got it right on edge :)
This chemical equation represents a chemical reaction H2SO4 + 2LiOH Li2SO4 + 2H2O which two chemicals are the products of the chemical reaction shown?
Answer:
Lithium sulphate (Li₂SO₄) and water (H₂O
Explanation:
H₂SO₄ + 2LiOH —> Li₂SO₄ + 2H₂O
The equation represented above indicates a neutralization reaction.
A neutralization reaction is a reaction involving acid and base which result in the production of salt and water.
In the equation above,
Reactant:
H₂SO₄ (acid)
LiOH (base)
Product:
Li₂SO₄ (salt)
H₂O (water)
Thus, lithium sulphate (Li₂SO₄) and water (H₂O) are the products of the reaction
determine the molar mass of a sample of a compound that contains 6.0 mol and has a mass of 14.6 g
Explanation:
moles=mass÷molar mass
n=m÷Mr
6.0=14.6÷Mr
Mr=14.6÷6.0
Molar mass= 2.433
Suppose that 3.33 g of acetone at 25.0 °C condenses on the surface of a 44.0-g block of aluminum that is initially at 25 °C. If the heat released during condensation goes only toward heating the metal, what is the final temperature (in °C) of the metal block?
Answer:
68.6 °C
Explanation:
From conservation of energy, the heat lost by acetone, Q = heat gained by aluminum, Q'
Q = Q'
Q = mL where Q = latent heat of vaporization of acetone, m = mass of acetone = 3.33 g and L = specific latent heat of vaporization of acetone = 518 J/g
Q' = m'c(θ₂ - θ₁) where m' = mass of aluminum = 44.0 g, c = specific heat capacity of aluminum = 0.9 J/g°C, θ₁ = initial temperature of aluminum = 25°C and θ₂ = final temperature of aluminum = unknown
So, mL = m'c(θ₂ - θ₁)
θ₂ - θ₁ = mL/m'c
θ₂ = mL/m'c + θ₁
substituting the values of the variables into the equation, we have
θ₂ = 3.33 g × 518 J/g/(44.0 g × 0.9 J/g°C) + 25 °C
θ₂ = 1724.94 J/(39.6 J/°C) + 25 °C
θ₂ = 43.56 °C + 25 °C
θ₂ = 68.56 °C
θ₂ ≅ 68.6 °C
So, the final temperature (in °C) of the metal block is 68.6 °C.
The final temperature of the metal block is 74.97°C
What is the specific heat?The specific heat of a substance is the required quantity of heat needed to raise the temperature of 1 gram of the substance by 1° C.
From the parameters given:
The mass of acetone = 3.33 gThe number of moles of acetone is:
[tex]\mathbf{= 3.33 g \times \dfrac{mol}{58.08 \ mol}}[/tex]
= 0.0573 mol
At standard conditions, the heat of vaporization of acetone is:
[tex]\mathbf{\Delta H = 32.0 \ kJ/mol \times 0.0578 \ mol } \\ \\ \mathbf{\Delta H = 1.8496 \ kJ } \\ \\ \mathbf{ \Delta H = 1.85 \times 10^3 \ J}[/tex]
Given that:
The mass of the metal (m) = 44.0 gThe initial temperature [tex]\mathbf{T_1}[/tex] = 25° CThe final temperature [tex]\mathbf{T_2 = ???}[/tex]The specific heat of the aluminum is = 0.903 J/g° C
The heat energy can be computed as:
q = msΔT
q = 41 g × 0.903 J/g° C × (x - 25°C)
Using the calorimetry principle, heat energy lost by metal = heat energy gained by acetone.
i.e.
[tex]\mathbf{q_{(acetone)} gain = q_{(metal)} lost }[/tex]
[tex]\mathbf{-1.85 \times 10^3 \ J = - 41 g \times 0.903 \ J/g^0 C \times ( x - 25^0 c) }[/tex]
[tex]\mathbf{1.85 \times 10^3 \ J = 41 g \times 0.903 \ J/g^0 C \times ( x - 25^0 c) }[/tex]
[tex]\mathbf{(x - 25 ^0 C) = \dfrac{1.85 \times 10^3 \ J }{ 41 g \times 0.903 \ J/g^0 C}}[/tex]
[tex]\mathbf{(x - 25 ^0 C) = 49.97^0 C}}[/tex]
[tex]\mathbf{x = 49.97^0 C+25 ^0 C}}[/tex]
x = 74.97 °C
Learn more about specific heat here:
https://brainly.com/question/1430612
Complete the three words. The oxidation state tells you how many electrons an atom has g....................... , l......................... , or s......................... , in forming a compound.
Answer:Gained, Lost , Shared
Explanation:
The oxidation state tells you how many electrons an atom has GAINED.................. , LOST....................... , or SHARED........................ , in forming a compound.
Oxidation state is defined as the the total number of electrons that an atom gains or loses when forming a chemical bond with another atom.
----To form an ionic bond for example in NaCl, Na, with 11 electrons and one valence electron in its outermost shell donates or lose that valence electron to Chlorine with 17 electron and 7 in its outermost shell. Therefore Sodium, Na acquires the +1 oxidaton state to become stable and Chlorine acquires the -1 oxidation state to become stable forming the NaCl compound.
To form a covalent compound, There must be sharing of electrons between atoms.For example, in PCl3, The phosphorous atom with atomic number 15 shares its three unpaired electrons with the single valence electrons of three chlorine atoms. making the four molecules to attain stability with Phosphorous having +3 and the chlorine atoms having -1 oxidation states
When you increase the volume on your television, what is happening to the sound waves coming out of the speaker?
A very specific procedure scientists follow when conducting experiments is known as the
Answer:
Scientific Method.
Explanation:
A scientific method is basically a method or a process when you conduct an experiment. Normally, the process goes like this:
1. You make like a question or something that you want to investigate, it's like the aim of the experiment.
2. You make an experiment and a hypothesis. A hypothesis is basically a guess on how the results of the experiment would turn out. You don't have to be correct for the hypothesis since there is no right or wrong answer.
3. Conduct the experiment. I don't think this needs a detailed explanation since experiments vary from one another.
4. Collect results. The data you collect come in different ways based on your experiment, but it is crucial you get data so that you can answer your question in 1.
5. Make inferences. You can't directly get a conclusion or answer from the results, so inferences are needed.
6. Craft a conclusion or answer. This is the final step when conducting an experiment and the part where you have the answer you needed when you conducted the experiment :)