When electrons absorb energy they are able to

1 answer:

4 0

When electrons absorb energy they are able to <span>move from their ground states up to excited states. The answer is letter B. an example of this is when you light a match. The molecules of the matchstick are in its ground state. When you flick it on the ground or anything hard, it causes its molecules to move into the excited state and thus causing fire.</span>

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What geologic features might form in convergent boundaries<br>Pls help

lisov135 [29]

1) deep trenches
2) active volcanoes
3) arcs of islands along the tectonic boundaries
4) in some cases, mountain ranges

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3 years ago

what is the ratio of the rate of effusion of helium (atomic mass 4.00 amu) to that of oxygen gas (molecular mass 32.0 amu)?

nignag [31]

Answer:

3 : 1

Explanation:

Let the rate of He be R1

Molar Mass of He (M1) = 4g/mol

Let the rate of O2 be R2

Molar Mass of O2 (M2) = 32g/mol

Recall:

R1/R2 = √(M2/M1)

R1/R2 = √(32/4)

R1/R2 = √8

R1/R2 = 3

The ratio of rate of effusion of Helium to oxygen is 3 : 1

8 0

3 years ago

Lionel has a hot plate, a thermometer, a container of water, a spoon, and a small hammer. Using these tools,

DIA [1.3K]

Answer:

atomic structure

Explanation:

Its pretty obvious. Nothing here can test atomic structure. You can test melting point, with a hot plate. You can test the ability to dissolve something with the container of water. You can test brittleness with the hammer.

6 0

3 years ago

Read 2 more answers

How many moless is 4.91x10^22 molecules of H3PO4?

Lynna [10]

1 mol = 6.023x10^23 number of molecules (Avogadro's number)

1 : 6.023x10^23
X : 4.91x10^22

(6.023x10^23)X = 4.91x10^22

X = 4.91x10^22/6.023x10^23

X = 0.082 Moles

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3 years ago

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levacccp [35]

You would calculate them by dividing them and then multiplying to get the final answer

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4 years ago