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QveST [7]
2 years ago
11

Determine the mass of the following samples (remember mass => grams)

Chemistry
1 answer:
kakasveta [241]2 years ago
5 0

Mass is the amount of content available in the matter. The mass of the moles of samples given are

2 moles Co = 117.86 g Co

5 moles H2 =  10.10 g  H₂

2.1 moles H₂O = 37.84 g  H₂O

<h3>What is a mole?</h3>

A  mole can be atoms or molecules or ions or any substance.

The mass of one mole of Co is 58.93 g.

Then, 2 moles of Co will be 2 x 58.93 g = 117.86 g Co

The mass of one mole of H₂ is 2.02 g.

Then, 5 moles of  H₂ will be 5 x 2.02 g =  10.10 g  H₂

The mass of one mole of H₂O is 18.02 g .

Then, 2.1 moles of  H₂O will be 2.1 x 18.02 g =  37.84 g  H₂O

Thus, the mass of the following samples in grams

2 moles Co = 117.86 g Co

5 moles  H₂=  10.10 g  H₂

2.1 moles H₂O = 37.84 g  H₂O

Learn more about mole.

brainly.com/question/26416088

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You unknowingly run over a small nail while driving and it punctures your tire. When you are getting in your car the next mornin
Norma-Jean [14]

The nails can puncture the tires of the vehicles making them deflated after a while. The process of tire deflation due to a puncture is due to the process called an effusion. Thus, option c is correct.

<h3>What is effusion?</h3>

Effusion is the process that defines the escape of the fluids or gases from a system through an outlet with a small diameter compared to the mean free path of the molecules.

When a tire is punctured then the gas from the tire starts to move out through the hole through effusion. This leads to deflation of the tire after some time as all the gas present inside had moved out completely.

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7 0
2 years ago
The formula for water is H20. What does the formula H2O tell us about the composition<br> of water?
Llana [10]
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4 0
3 years ago
What is the intermolecular force of NH3
Dominik [7]
ANSWER:
London dispersion and hydrogen bonds.


EXPLANATION :
Every molecule experiences London dispersion as an intermolecular force.since the ammonia ion has hydrogen atoms bonded to nitrogen,a very electronegative atom,the molecule is also polar since the nitrogen atom more strongly pulls on the electrons from the hydrogen atoms than the hydrogens themselves do.

This effect is similar to that water,where the oxygen pulls the electrons of the hydrogen atoms with a greater magnitude,resulting in the oxygen having a partial negative charge and the hydrogens having a partial positive charge relative to each other.

This polarity shows that the molecule has dipole-dipole intermolecular forces but since the polarity is from a result of highly electronegative atoms (such as nitrogen,oxygen,fluorine) and hydrogen atoms actually bonded to them,the polarity is categorized in it's own intermolecular force called a hydrogen bond.




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