It means that a person has the ability to describe, explain, and predict natural phenomena. Scientific literacy entails being able to read with understanding articles about science in the popular press and to engage in social conversation about the validity of the conclusions. Scientific literacy implies that a person can identify scientific issues underlying national and local decisions and express positions that are scientifically and technologically informed. A literate citizen should be able to evaluate the quality of scientific information on the basis of its source and the methods used to generate it. Scientific literacy also implies the capacity to pose and evaluate arguments based on evidence and to apply conclusions from such arguments appropriately.
hope this helps and sorry if this is wrong
How much H₂ is needed to react with 6.58 g of O₂ in this reaction?
H₂ + O₂ --> H₂O
Where can you change the atom/molecules used in the simulation? Which atoms/molecules are
available for you to choose?
Answer:
When two or more atoms are chemically joined together, this is called a molecule. In some cases, such as hydrogen and oxygen, the molecule is made entirely of the same atom, such as hydrogen gas (a molecule) is made entirely of two hydrogen atoms. Here, converting molecules to atoms is as simple as dividing by two.
Atoms can join together - they form bonds together - to make MOLECULES. For example, two atoms of hydrogen hook together to form a molecule of hydrogen
Which term refers to a substance that is formed in one step of a reaction mechanism and consumed in a subsequent step of the reaction mechanism?
catalyst
reagent
extracellular protein
reaction intermediate
Answer:
: B, if it is produced in an earlier step. Which term refers to a substance that is formed in one step of a reaction mechanism and consumed in a subsequent step of the reaction mechanism? D: reaction intermediate
Explanation:
pa brainlyes po kailangan lang talaga
Answer:
its D
Explanation:
trust
10. The energy in a spinning ferris wheel
a. Potential energy
b. Kinetic energy
Answer:
kinetic energy is the right answer
Answer: the answer is B
Explanation: its a spinning Ferris wheel meaning its in motion
How many moles of carbon dioxide (CO2) are equivalent to 4.55 X 10^24 molecules?
A. 4.55 moles
B. 7.56 moles
C. 15.1 moles
D. 22.7 moles
Answer:
b
Explanation:
use Avogadro's number to convert molecules to moles
1 mole is equal to 6.023 × 10 ²³ molecules. 7.56 moles of carbon dioxide (CO2) are equivalent to 4.55 X 10^24 molecules.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
1 mole of any substance = 6.023 × 10²³molecules
1 mole of carbon dioxide = 6.023 × 10²³molecules
Then 4.55 X 10^24 molecules of CO₂ = 4.55 X 10^24 × 1 mole / 6.023 × 10²³
= 7.56 moles
Thus, 7.56 moles of carbon dioxide (CO2) are equivalent to 4.55 X 10^24 molecules.
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If the half-life of hydrogen-1 is 12 years, how much is left over of an original sample of 40g after 36 years?
The amount remaining after 36 years is 5 g
How to determine the number of half-lives Half-life (t½) = 12 yearsTime (t) = 36 years Number of half-lives (n) =?n = t / t½
n = 36 / 12
n = 3
How to determine the amount remaining Original amount (N₀) = 40 gNumber of half-lives (n) = 3Amount remaining (N) = ?N = N₀ / 2ⁿ
N = 40 / 2³
N = 40 / 8
N = 5 g
Therefore, the amount remaining after 36 years is 5 g
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Carlos is making phosphorus trichloride using the equation below. He uses 15. 5 g of phosphorus and collects 50. 9 g of phosphorus chloride. 2P 3Cl2 2PCl3 How much chlorine reacted with the phosphorus? 15. 5 g 17. 7 g 35. 4 g 66. 4 g.
Answer:
B
Explanation:
Atoms with different numbers of neutrons in their nucleus are:.
Answer: They are referred to as isotopes, which are a form of an element that has different numbers of neutrons in their nucleus.
HELP PLSS!!! I want a answer by the end of the day pls!!! Determine if the following statement is true or false and explain why: Heating a material will not destroy matter.(1 point)
True. Heating will always convert some matter into another substance, but the Law of Conservation of Mass states that matter may not be destroyed.
True. Heating will always convert some matter into another substance, but the Law of Conservation of Mass states that matter may not be destroyed.
False. Heating will always convert some matter into another substance, and this process results in matter being destroyed in order to form the new substance.
False. Heating will always convert some matter into another substance, and this process results in matter being destroyed in order to form the new substance.
True. Heating may convert some matter into another substance, but the Law of Conservation of Mass states that matter may not be destroyed.
True. Heating may convert some matter into another substance, but the Law of Conservation of Mass states that matter may not be destroyed.
False. Heating may convert some matter into another substance, and this process results in matter being destroyed in order to form the new substance.
Answer:
True. Heating may convert some matter into another substance, but the Law of Conservation of Mass states that matter may not be destroyed.
Explanation:
the answer is C
Donna is drinking alcohol with her friend Allan. They have both consumed the same amount of alcohol so far. It is likely that Donna's blood alcohol concentration (BAC) will be about a. the same as Allen's. b. 10% lower than Allen's. c. 10% higher than Allen's.
It is likely that Donna's blood alcohol concentration (BAC) will be about
10% higher than Allen's.
What is Concentration?This is defined as the abundance of a constituent divided by the total
volume of a mixture.
During drinking, the concentration of alcohol is dependent on a lot of
factors such as the internal constituent of the body which is why Donna
will most likely have a higher alcohol concentration.
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A 3.00mol sample of CO2(g) is in a rigid 6.00L container at 400.C∘ .
Which of the following is the pressure of the gas?
16.4atm
Answer A: 16.4 atmospheres
A
27.6atm
Answer B: 27.6 atmospheres
B
200.atm
Answer C: 200 decimal point, atmospheres
C
995atm
The pressure of the gas that has 3.00mol sample of CO2(g) is in a rigid 6.00L container at 400°C is 27.6atm.
HOW TO CALCULATE PRESSURE?The pressure of a gas can be calculated using the ideal gas law equation as follows:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureP = ?v = 6Ln 3 molR = 0.0821 molL/KatmT = 400 + 273 = 673KP × 6 = 3 × 0.0821 × 673
6P = 165.76
P = 165.76 ÷ 6
P = 27.6atm
Therefore, the pressure of the gas that has 3.00mol sample of CO2(g) is in a rigid 6.00L container at 400°C is 27.6atm.
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Which statement is correct about the theory of combustion? (1 point)
A. The law of conservation of mass provided justification for the theory of combustion.
B. The theory of phlogiston provided justification for the theory of combustion.
C. The theory of phlogiston became the theory of combustion.
D.The law of conservation of mass became the theory of combustion.
The theory of phlogiston was the first to explain combustion process. J.J Becher was proposed this theory and states the existence of phlogisticated substances contain phlogiston and that they dephlogisticate when burned.
What is combustion ?Combustion is the reaction of gases with atmospheric oxygen producing carbon dioxide and water. Gases like hydrocarbons easily undergoes combustion reaction.
Combustion is an exothermic reaction. Thus, heat is evolved to the surrounding. The conservation of mass is not only for combustion but it is the theory of every reaction.
The phlogiston idea, a debunked scientific hypothesis, suggested that combustible bodies contained a fire-like substance called phlogiston, which was produced after combustion.
Johann Joachim Becher originally put out the concept in 1667, and Georg Ernst Stahl later formalized it. The Phlogiston theory sought to explain a variety of chemical reactions, including burning and rusting Hence, option C is correct.
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name the reasons why chemistry is important in industry
Answer:
Chemistry is essential for meeting our basic needs of food, clothing, shelter, health, energy, and clean air, water, and soil. Chemical technologies enrich our quality of life in numerous ways by providing new solutions to problems in health, materials, and energy usage
Answer:
▪Why Is chemistry important in industry?
[Chemistry helps our industry produce more materials—such as paints, plastics, iron or steel, cement, kerosene, and also motor oil. Chemistry also helps farmers to enrich the soil with chemicals ... to grow fresh vegetables.] Chemistry is important, especially in household things like condoms, cleaning, and cooking.
▪10 Reasons Why Chemistry Is Important
➢Chemistry helps explain everything.
➢Being interested in chemistry opens up career options.
➢Chemistry helps people develop strong analytical skills.
➢Understanding chemistry keeps people safe.
➢Chemistry helps protect the environment.
➢Chemistry is used in law.
➢Chemistry is used in the food industry
➢Chemistry is important in agriculture
➢Chemistry is used in medicine
➢Chemistry is important for space travel
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the radio waves from your cell phone go through the air and are received by a ??
Answer:
An antenna
Explanation:
Radio waves are received by antennas
Ram's father have 3 childrens first is lina and second is pina who is third
Answer: Ram
Explanation:
Because as you mentioned in the beginning it is Ram's father
Define the following:
Organic Acid.
Dilute Acid.
Indicator
Neutralization.
Acid Rain
Answer:
Please see below
Explanation:
Organic acid - An organic acid is an organic compound with acidic properties. Organic acids should include amino acids, fatty acids, ketoacids, and a variety of other endogenous and exogenous acids.
Dilute acid - A dillute acid is an acid which has water in a ratio of 90:10 90 water and 10 acid.
Indicator - a substance (as a dye) used to show visually (as by a change in color) the condition of a solution with respect to the presence of a particular material
Neutralization - the reaction of an acid and a base forming a salt and water.
Acid rain - rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulphur and nitrogen oxides which combine with atmospheric water to form acids.
Trevor was able to collect what appeared to be blood and sweat from a kitchen counter. What type of evidence does this BEST represent
A. trace evidence
B. biological evidence
C. ammunitions evidence
D. impression evidence
Answer:
Biological Evidence
Explanation:
Both blood and sweat are fluids within the body, therefore, both are biological substances.
Hey yall any answers
Answer:
January = 45
May = 80
Explanation:
45 + 8 = 53
53 + 8 = 61
61 + 8 = 69 Round 70
70 + 8 = 78 Round 80
[RevyBreeze]
Answer: i might 45 and 110 because i think that it is adding or something
Explanation:
what is the product after the chemical reaction
Answer: a. 2 C3H7OH + 9 O2 → 6 CO2(g) + 8 H2O(g)
b. C6H12O6 + 6 O2 → 6CO2(g) + 6 H2O(g)
Explanation:
Alcohols and sugars combust or when burned with oxygen forms carbon dioxide and water.
What is the ground-state electron configuration of a neutral atom of manganese?.
Explanation:
elctronic configuration of manganese
Mn=1s²2s²2p⁶3s²3p⁶4s²3d⁵
ground state
Mn=Ar3d⁵4s²
note that Ar is argon
Water contains hydrogen and oxygen. Hydrogen is an explosive gas, while oxygen is a flammable gas. Will the physical properties of water be similar? Why or why not?
Answer:
hope you like it
Explanation:
No, your refreshing glass of water won't spontaneously combust. Water is made up of two elements, hydrogen and oxygen. Hydrogen is flammable, but oxygen is not. ... You can, however, break it down into hydrogen and oxygen by putting energy into it, in the form of an electric current.
Oxygen ENTERS the body through the...
1.The circulatory system
2.The Digestive system
3.The respiratory system
4. The cells in the body
Answer:
Respiratory System
Explanation:
It connects with the lungs. The oxygen enters the body through the capillaries which are a part of the respiratory system.
If you had a mixture of butyric acid and hexane, how would you separate the two compounds?.
Answer:
First of all take separatory funnel.
Add the mixture of compounds into it.
Pour Water into it.
Add NaOH base. This will result in following reaction.
CH₃CH₂CH₂COOH + NaOH → CH₃CH₂CH₂COONa + H₂O
The resulting salt (CH₃CH₂CH₂COONa) is is soluble in water.
The water is the bottom layer (more density) and contains sodium butyrate.
Pour out the water from separatory funnel.
The organic layer (hexane) is left behind.
Now, take the aquous layer and neutralize it using HCl.
Once, neutralized remove the water.
A 500g piece of Aluminum has a temperature increase of 7 degrees. The specific heat of Aluminum is 0.900 J/gC. If you were using q = m c ∆T to find the amount of heat produced, which value would you plug in for "m"?
500 g
0.900 j/gC
3150 j
7 degrees
Answer:
is it 500 g
Explanation:
cause m stands for mass
To find the amount of heat produced, the value of m which we plug is 500 grams.
How do we calculate the amount of heat?Amount of heat absorbed or released during any chemical change will be calculated as:
Q = mc∆T, where
Q = absorbed or released heat
m = mass of substance
c = specific heat of substance
∆T = change in temperature
So, according to question to calculate energy in place of m we will put the given mass of aluminum which is equal to 500g.
Hence required value of m is 500g.
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Which scientist researched and described the results of genetic crosses?
Question 1 options:
Alfred Wegner
Gregor Mendel
Marie Curie
Santa Clause
Gregor Mendel researched and described the results of genetic crosses. He is considered the father of genetics.
Who was Gregor Mendel?Gregor Mendel was a botanist who made different genetic crosses using pea plants as a model organism.
Gregor Mendel observed as phenotypic traits were transmitted to the pea descendence in the F1 and F2 generation.
Gregor Mendel developed fundamental laws in genetics such as independent assortment and segregation.
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Why is lifting a box off the ground considered work but carrying a box is not ?
Answer:
In this case the gravitational force is conservative, but the force you exert is not. So, as you lift the box, the work done by non-conservative forces (you) is not zero, and as a result, the total energy of the box increases.
But, Lifting a box is not scientifically considered "work"
Explanation: You do no work against gravity because you are not moving any distance (more accurately displacement) in the direction of the force i.e. the force and displacement are perpendicular once you have lifted the boxes. As work done = force x displacement parallel to the force, no work is done.
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2. Sodium Bicarbonate decomposes when heated to form sodium carbonate, water, and
carbon dioxide gas. If 1.8 moles of carbon dioxide are produced, how many moles of
sodium bicarbonate were decomposed?
Answer:
3.6 moles of sodium bicarbonate were decomposed.
Explanation:
The decomposition of sodium bicarbonate (NaHCO₃) to form sodium carbonate (Na₂CO₃), water, and carbon dioxide gas can be represented by the following balanced chemical equation:
[tex]\displaystyle 2\text{NaHCO$_3$}_\text{(s)} \longrightarrow \text{Na$_2$CO$_3$} + \text{H$_2$O}_\text{($\ell$)} + \text{CO$_2$}_{\text{(g)}}[/tex]
We want to determine the amount of sodium bicarbonate decomposed when 1.8 moles of carbon dioxde is produced.
From the equation, we can see that the mole ratio between carbon dioxide and sodium bicarbonate is 1:2. That is, there is one mole of carbon dioxide produced for every two moles of sodium bicarbonate.
Therefore:
[tex]\displaystyle 1.8\text{ mol CO$_2$} \cdot \frac{2\text{ mol NaHCO$_3$}}{1\text{ mol CO$_2$}} = 3.6\text{ NaHCO$_3$}[/tex]
In conclusion, 3.6 moles of sodium bicarbonate were decomposed.
Which group is arranged correctly in order of increasing energy for electrons in an element?
(A) 2p,2s,1s
(B) 3p,4s,3d
(C) 3s,3d,3p
(D) 2s,4p,3d
(E) 3p,4s,4d
Answer:
E.)3p,4s,4d
Explanation:
In order as: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p… 1s will be filled first, with the maximum of 2 electrons. 2s will be filled next, with the maximum of 2 electrons. 2p will be filled next, with the maximum of 6 electrons.
B) 3p, 4s, 3d
hope this helped
Water is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. Describe what happens on the molecular level as the water dissolves in the isopropanol. Select the correct step order from the drop-down menu for each step listed. The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water. The water molecules spread evenly throughout the solution. The water molecules are carried into the solution. The isopropanol molecules surround the water molecules.
Isopropanol molecules are attracted to water at the surface and surround them. The water gets carried in and gets spread evenly in the solution.
What is the mechanism of water dissolution?A solution is formed when the water and the isopropanol get mixed and dissolved. Isopropanol is a polar solute that dissolves the water molecule in it to form a solution.
The polar molecules of the isopropanol get attracted towards the polar water molecules and start surrounding the water molecules.
The water molecules get carried in the isopropanol in the solution and get evenly dispersed in the solution.
Therefore, water and isopropanol form the solution.
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Answer:
The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water.
✔ 1
The water molecules spread evenly throughout the solution.
✔ 4
The water molecules are carried into the solution.
✔ 3
The isopropanol molecules surround the water molecules.
✔ 2
Explanation:
The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water.
✔ 1
The water molecules spread evenly throughout the solution.
✔ 4
The water molecules are carried into the solution.
✔ 3
The isopropanol molecules surround the water molecules.
✔ 2
Calculate the molality of chloride ions in an aqueous solution of magnesium chloride in which the mole fraction of magnesium chloride is 0.0400 .
The molality of chloride ions is 4.63kg/L
Data;
Mole Fraction = 0.0400Molality of Chloride ions = ?Molality of Chloride ionsMole Fraction of MgCl2 = 0.04
The sum of mole fraction = 1
Mole fraction of water = 1 - 0.04 = 0.96
since the total number of moles = 1
Number of moles of MgCl2 = mole fraction * total number of moles
Number of moles of MgCl2
[tex]0.04 * 1 = 0.04 moles[/tex]
Number of moles of water =
[tex]0.96 * 1 = 0.96 moles[/tex]
1 moles of MgCl2 = 2 moles of Chloride ions
Number of moles of chloride ions
[tex]2 * 0.04 = 0.08 moles[/tex]
Number of moles of water = 0.96moles
mass of water = molecular weight * number of moles
mass of water =
[tex]18 * 0.96 = 17.28g[/tex]
let's convert this to kilogram
[tex]1000g = 1kg\\17.28g = x\\x = 0.01728kg\\[/tex]
The molality of the ions in the solution is
[tex]M = \frac{mass of solute}{volume of solution} \\M = \frac{0.08}{0.01728} =4.63 kg/L[/tex]
The molality of chloride ions is 4.63kg/L
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