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Greenhouse gases such as N2O, CO2 and CH4 absorb heat. However, CH4 absorbs more heat than CO2 hence its emission must be controlled.

Green house gases are gases that when released into the atmosphere, can absorb infrared radiation and prevent it from escaping into outer space. This causes the temperature of the earth to increase steadily. Lately, the concentration of the greenhouse gases in the atmosphere has increased owing to anthropogenic activities such as burning of fossil fuels.

Green house gases include; N2O, CO2, CH4 etc. However, CH4 is capable of absorbing even greater heat than CO2. This makes it even more imperative to control the emission of methane gas.

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2.) Which of the following has the fastest moving particles?
a.) A desk at 25°C
b.) A glass of water at 25°C
A balloon filled with helium at 25°C

Write the law of conservation of matter…
(Please Answer fast)

A 0.8612-g sample of a mixture of NaBr, NaI, and NaNO3 was analyzed by adding AgNO3 and precipitating a 1.0186-g mixture of AgBrand AgI. The precipitate was then heated in a stream of Cl2, convertingit to 0.7125 g of AgCl. Calculate the %w/w NaNO3 in the sample.

How many elements are in the compound calcium carbonate?

What are the valence electrons of an atom?
A.The electrons that remain closest to the nucleus
B.The electrons that an atom gains when it becomes an anion
C.The electrons that an atom loses when it becomes a cation
D.The electrons in the highest occupied energy level

using the standard enthalpies of formation, what is the standard enthalpy of reaction?

What charge would each element obtain when it becomes an ion? a) aluminum e) lodine
b) lithium c) barium f) phosphorus g) sulfur d) bromine h) magnesium​

You are given an unknown solution, which contains both aqueous barium ion, Ba2+ (aq), and aqueous lead(II) ion,
Pb²+ (aq). Which of your six solutions would allow separation of the ions?

Select all that apply.

A. Ammonium chloride, NH4Cl(aq)

B. Iron(II) nitrate, Fe(NO₂)(aq)

C. Nickel(1) chloride, NiCl(aq)

D. Silver nitrate, AgNO₂(aq)

E. Sodium hydroxide, NaOH(aq)

F. Sulfuric acid, H₂SO,(aq)

As an atom gains extra electrons, it also changes size. How does the size change, and what causes the change?


The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more negatively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets smaller because there are more positively charged particles inside the nucleus to pull subatomic particles in closely.

The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more negatively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.

The atom gets larger because there are more positively charged subatomic particles spread out around the nucleus.

first to answer gets 50 points

a substance composed of two or more metals.

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best answer will be tagged brainliest.... no spamming pliz​

Identify the cells in interphase, prophase, metaphase, anaphase, and telophase by circling the cells.​

How much energy does orange light have if its wavelength is 615 nm?

Use the ROYGBIV (red, orange, yellow, green, blue, indigo, violet)

Is density a characteristic property of water?

does the character of a bond become more covalent or ionic when the difference in electronegativity of the bonded atoms increases?

the fact that matter is not created or destroyed in any chemical or physical change is called the

Which of the following is NOT a way that water moves from the land to the atmosphere?

Air pressure is greatest near the surface of the Earth in the _______.



Question 7 options:

Thermosphere


Mesosphere


Troposhere


Exosphere

How many kilojoules are equivalent to 10 Joules?

A) 0.001 kJ

B) 0.01 kJ

C) 1000 kJ

D) 10,000 kJ

What is the health danger of breathing carbon monoxide

The three most common states of matter on Earth are solids,blank
and gases. A fourth state,blank
exists in stars and in
flashes.blank

Which of these objects has the properties of a solid?
A.
desk
B.
water
C.
rain
D.
milk

PLEASE HELPP!!
True or False: Non-metal is a kind of metal.

why are metals not used on transistors and integrated circuits

Potential energy is energy that is stored in an object. It isn't being used at the moment, but is waiting to do work. A good example is to think about a boulder sitting on top of a hill. Just sitting there, the boulder isn't doing anything. But because it is sitting on top of a hill, it has the potential to roll down and do some damage to a car or building below. The energy is stored in that rock because of its size (mass) and the distance it will travel once it starts rolling. Another good example is a rubberband. When you stretch a rubber band, it wants to move back to its original position, and thus you have given it potential energy. As the rubber band is released, potential energy is changed to motion.
Kinetic energy is energy of motion. A rubber band flying through the air has kinetic energy. When you are walking or running your body is exhibiting kinetic energy. This energy is performing work. Other examples of kinetic energy include: legs pump bicycle pedals, lightning snaps trees, cars travel down the street, football players making tackles, and 4-wheelers speeding through the woods.
Potential energy is converted into kinetic energy. As mentioned before, a stretched rubberband can change from having potential to kinetic energy. Another example of this change between kinetic and potential energy can be seen using a yo-yo. Before a yo-yo begins to fall from your hand it has stored energy due to its position. At the top (in your hand) it has its maximum potential energy. As it starts to fall the potential energy begins to be changed into kinetic energy. At the bottom its potential energy has been completely converted into kinetic energy so that it now has its maximum kinetic energy. Another example of the change between kinetic and potential energy is a waterfall. A waterfall has both potential and kinetic energy. The water at the top of a waterfall has stored potential energy. When the water begins to fall, its potential energy is changed into kinetic energy. This change in energy is used in Niagara Falls, Canada to provide electricity to parts of the northeastern United States.

Questions:
1. What is kinetic energy?
2. What is potential energy?
3. List 5 examples of Potential energy given in the above passage. The first two are filled in for you.
1. __A boulder sitting on top of a hill that could roll down.___________ 2. __A stretched rubberband.___________________________________ 3. ________________________________________________________ 4. ________________________________________________________ 5. ________________________________________________________
4. List 5 examples of Kinetic Energy given in the passage above. The first
two are filled in for you.
1. __Water falling down a waterfall.____________________________ 2. __Car moving through the streets.____________________________ 3. ________________________________________________________ 4. ________________________________________________________ 5. ________________________________________________________

In what ways are the electronic structures of the group 14 (4A) elements similar? In what ways are they different?

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Which diagram or diagrams represent a compound?

what are the units for the rate constant of a first-order reaction?