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3 years ago

Which state of matter are required for energy transfer to occur when radiant energy is the source?

Chemistry

1 answer:

lisabon 2012 [21]3 years ago

8 0

Answer:

No state of matter is required

Explanation:

When radiant energy is the source, we are talking about energy transfer by radiation, so matter is not needed for the energy to be transfered.

An example of this could be the Sun, it heats up the Earth by radiation, even through the vacuum of outer space, where there is next to no matter.

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How is an endothermic reaction identified?

Fynjy0 [20]

D- It requires heat as a reactant

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3 years ago

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Which type of organic reaction produces both water and carbon dioxide?

ankoles [38]

the correct answer is combustion

when an organic compounds burns in the presence of oxygen the products are carbon dioxide and water. Combustion reactions yields a large amount of energy

an example for combustion reaction is as follows

combustion of methane;

CH₄ + 2O₂ --> CO₂ + 2H₂O

correct answer is

2. combustion

4 0

3 years ago

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Which statement best explains the effect of the sestina structure in Elizabeth Bishop's "Sestina"?

IceJOKER [234]

Answer:

The sestira structure makes the poem feel like a playful puzzle, but aciels nothing to the meaning of the poem

The repetition of the last word in each line creates a reflective rhythm and tone in the poem while also making significant words

easily recognizable

Explanation:

That was a really good one, I think you may want to go with that answer.

8 0

3 years ago

a sample of the hydrate of sodium carbonate has a mass of 8.85 g. it loses 1.28 g when heated. find the molar ratio of this comp

xenn [34]

Answer:

Molar ratio of the compound is 1:1 and the type of hydrate is Mono hydrate.

Explanation:

From the given,

Mass of sodium carbonate $Na_{2}CO_{3}.XH_{2}O$ = 8.85 g

Loss mass $H_{2}O$ = 1.28 g

Actual weight of sodium carbonate = 8.85 g - 1.28 g = 7.57 g

$7.57 g Na_{2}CO_{3} \times \frac{1mol}{106 g} =\frac{0.0714}{0.0714}=1$

$1.28g H_{2}O \times \frac{1mol}{18 g} =\frac{0.0711}{0.0714}=1$

Therefore, the compound has only one water molecule.

Molecular formula of the compound is $Na_{2}CO_{3}.H_{2}O$ an name of the compound is sodium carbonate mono hydrate.

Hence, the type of the compound is Mono hydrate.

8 0

3 years ago

What Size container do you need to hold 0.0459 mol of N2 gas at stp

Allushta [10]

Hello!

You need to calculate the volume of the container. To calculate the volume of this amount of N₂ gas we need to make the assumption that N₂ behaves like an ideal gas.

1 mole of an ideal gas under Standard Temperature and Pressure occupies 22,4 L so the calculations are as follows:

$0,0459 mol N_2* \frac{22,4 L}{1 mol N_2}= 1,028 L$

So, the volume of the container should be 1,028 L or more.

Have a nice day!

4 0

3 years ago