CHEMISTRY HIGH SCHOOL

In chemical reactions, atoms area. created.
c. rearranged.
b. destroyed.
d. neutralized.

Answers

Answer 1
Answer: In chemical reaction, atomsalways are rearranged. They are never destroyed or created because it wouldcontradict the law of conservation of energy. The law of conservation of energystates that a matter cannot be created nor destroyed. It can only be formed inone way or the other. Also it cannot be neutralized. Resulting in one cannot bepart of a chemical reaction. An example of this is the reaction HCl + NaOH-> NaCl + H2O. the reactants and products are not created, they are justformed into another substance.
Answer 2
Answer:

Final answer:

In chemical reactions, atoms are rearranged to form new substances.

Explanation:

In chemical reactions, atoms are rearranged.

Atoms are the fundamental building blocks of matter, and they cannot be created or destroyed in a chemical reaction. Instead, the atoms that make up the reactants rearrange themselves to form the products of the reaction.

For example, in the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O), the atoms in the hydrogen and oxygen gases rearrange to form the water molecules. Thus we can correctly predict the arrangement of atoms as described above.

Learn more about Atoms here:

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Gold has a density of 19.3 g/cm3. What is the mass, in kilograms, of one cubic meter of gold?

Mr. Fuller assigned his science class a lab comparing the masses of objects to the nearest gram using a balance. The mass of a paper clip is about 1 gram. How many paper clips will it take to balance the scale, if it is determined that a 1 centimeter cube of gold has the mass of 19.3 grams?

Answers

Like about 15 paper clips to balance the scale

Answer:

C)  19

Explanation:

took the test

How many total atoms are in 0.380 g of P2O5

Answers

The gram formula mass of P2O5 is 31*2 + 16*5 =142. The mole number of P2O5 is 0.380/142=0.00268 mol. There is 7 atom in one P2O5 molecule. And there is 6.02 * 10^23 molecule per mol. So the answer is 1.13*10^22 atoms.

Air bags, which act as safety devices in cars, contain solid sodium azide. On impact, the sodium azide releasesnitrogen gas, which expands the air bag. The main benefit of using a gas instead of another type is that —
A. gas molecules are subject to ionic bonding
B. the separation of gas molecules is much greater than the volume they occupy
C. gases won’t explode the bag on very hot days
D. gas molecules don’t transfer excess Kinetic Energy

Answers

The answer is; D

The reason for this is because gases are compressible . Much of the energy of the impact created when your head hits the air bad is absorbed by the gas (through compression and rarefaction) hence reducing the damage to the head in case of an accident.

what do I do when my dog ate my secret 10 pound stash of chocolate and he won't move please help what do i do oh god help me pls​

Answers

Answer:

call an vet ASAP 10 pounds of chocolate is very bad for a dog.

Explanation:

Chocolate is one of the worst things a dog can eat, and 10 pounds of it is worst! Take your dog to the vet IMMEDIATELY! I hope that that the dog will survive.

-------------------------------------------------------------------------------------------------------------Brainiest would make my day, but you don’t have to give it! You’re welcome.

in a molecule of methane, carbon (having four valence electrons) binds to four hydrogen atoms. how many lone pairs of electrons will be represented in the lewis structure of methane? a. four b. two c. one d. zero

Answers

D. Each bond is a single bond. Allowing all 4 valence electrons in the carbon to be taken up by the one valence electron in the four hydrogen atoms.

Together, the protons and neutrons are called what?A)nucleinucleons
B)nuclear binding C)energy
D)nuclear forces

Answers

Answer:The correct answer is 'nucleons'.

Explanation;

An atom is a structural unit of matter.It consist of three subatomic particles: electrons, protons, and neutrons.

Protons and neutrons are located at center of an atom where whole mass of an atom is concentrated that is in the nucleus of a atom.

Protons and neutron being located in nucleus are also known as nucleons.

Where as electrons revolve around the nucleus in different orbits inside an atom.

Hence, the correct answer is 'nucleons'.
I think B. is the correct answer i hope i helped
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