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3 years ago

Which of the following best describes how an electron moves when it absorbs or releases exact amounts of energy?

Chemistry

2 answers:

const2013 [10]3 years ago

4 0

Answer: The correct option is B.

Explanation: As the electron moves from lower energy level to higher energy level, it absorbs some amount of energy. When the electron returns back from this higher energy level to the lower energy level, it emits the exact amount of energy it has absorbed.

As every orbital has its characteristic energy value, whenever electrons absorb or emit energy, they move to different energy level that is they occupy different orbitals and hence we can say that the electron moves between orbital levels.

Brrunno [24]3 years ago

3 0

B.The electron moves between orbital levels.

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Which of the following is a molecule but

Oksana_A [137]

Answer:

CO2

Explanation:

All of the other options are elements found on the periodic table but Carbon Dioxide are two elements.

5 0

3 years ago

Given the reaction: 4 NH3(g) + 5 O2(g) → 4 NO (g) + 6 H2O When 1.20 mole of ammonia reacts, how many moles of water are produced

Ganezh [65]

Answer:

When 1.20 mole of ammonia reacts, 1.8 moles of water are produced.

Explanation:

The balanced reaction is:

4 NH₃(g) + 5 O₂(g) → 4 NO (g) + 6 H₂O

By stoichiometry of the reaction, the following amounts of moles participate in the reaction:

NH₃: 4 moles
O₂: 5 moles
NO: 4 moles
H₂O: 6 moles

Then you can apply the following rule of three: if by stoichiometry 4 moles of ammonia produce 6 moles of water, 1.2 moles of ammonia will produce how many moles of water?

$moles of water=\frac{1.2 moles of ammonia*6 moles of water}{4 moles of ammonia}$

moles of water= 1.8 moles

When 1.20 mole of ammonia reacts, 1.8 moles of water are produced.

8 0

3 years ago

Electron configuration for be+2

svlad2 [7]

Answer:

atomic number of Be =4

electronic configuration :1s²2s²

but for Be2+ atomic number = 4-2 =2

electronic configuration : 1s²

6 0

3 years ago

PLEASE HELP ME 10 POINTS

Shkiper50 [21]

My best guess is shame

6 0

3 years ago

Read 2 more answers

. Explaining How is the legislative branch organized, and what are its functions?

Fed [463]

Answer:

The most important function of the legislative branch is its lawmaking authority. In order for a law to be created, a bill must be introduced by either a member of the House or Senate. Once introduced, the bill is brought to a committee for review. ... Each committee is organized around a specific policy function.

Explanation:

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3 years ago