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3 years ago

If you have 12 atoms of hydrogen before a chemical reaction, how many atoms of hydrogen will be present

Chemistry

1 answer:

soldi70 [24.7K]3 years ago

6 0

Answer:

《HOPE IT WILL HELP YOU 》

Explanation:

I think the present atom of hydrogen will 1

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A sample of argon gas has a volume of 795 mL at a pres-sure of 1.20 atm and a temperature of 116 ∘C. What is the final volume of

jek_recluse [69]

<u>Answer:</u> The volume when the pressure and temperature has changed is $1.6\times 10^2mL$

<u>Explanation:</u>

To calculate the volume when temperature and pressure has changed, we use the equation given by combined gas law.

The equation follows:

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1,V_1\text{ and }T_1$ are the initial pressure, volume and temperature of the gas

$P_2,V_2\text{ and }T_2$ are the final pressure, volume and temperature of the gas

Let us assume:

$P_1=1.20atm\\V_1=795mL\\T_1=116^oC=[116+273]K=389K\\P_2=0.55atm\\V_2=?mL\\T_2=75^oC=[75+273]K=348K$

Putting values in above equation, we get:

$\frac{1.20atm\times 795mL}{389K}=\frac{0.55atm\times V_2}{348K}\\\\V_2=\frac{1.20\times 795\times 348}{0.55\times 389}=1.6\times 10^3mL$

Hence, the volume when the pressure and temperature has changed is $1.6\times 10^2mL$

5 0

3 years ago

Eter explores the periodic table and how atoms can combine to form compounds. He uses beads with different sizes and colors as m

Eduardwww [97]

Answer is B- He can arrange the beads into various formations using different colors and sizes multiple times

Explanation: I hope the helped!

7 0

2 years ago

Read 2 more answers

The mass spectra of alcohols often fail to exhibit detectable M peaks but instead show relatively large ________ peaks.

nirvana33 [79]

Answer: M-18

Explanation:

The mass spectra of alcohols often fail to exhibit detectable M peaks but instead show relatively large __M-18___ peaks.

Mass spectroscopy is used to determine the molecular mass and molecular formula of a sample.

When the mass spectra of alcohols do not show detectable M peaks, they show relatively large M-18 peaks.

6 0

3 years ago

How would you know if a precipitate was formed without performing the chemical reaction

Goshia [24]

Hey there

Thats easy

Precipitation occurs when cations and anions in aqueous solution combine to form an insoluble ionic compound called precipitation. So, you can refer to a solubility chart or draw polar/nonpolar lewis structures, that might be helpful.
Remember water is polar so polar molecules will dissolve in water

4 0

3 years ago

What is a polar functional group?

earnstyle [38]

I think this is the answer

7 0

3 years ago