3 years ago

How can we tell the difference between gases like hydrogen, oxygen, and carbon dioxide cause they all look to same?

1 answer:

6 0

Answer:

The critical chemical difference is that CO2 contains one atom of carbon and two atoms of oxygen, whilst CO has one carbon and one oxygen atom.

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Electron pair geometry and molecular geometry may be the same or may be different.

soldier1979 [14.2K]

True. For example, electron domain geometry and molecular geometry of water and ammonia are different.

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3 years ago

18. What is the percent by mass sugar of a solution made by dissolving 12.45 grams of sugar in 100 grams of water?

Fantom [35]

The percent by mass sugar of a solution : 11.07%

<h3>Further explanation</h3>

Given

mass of sugar = 12.45 g

mass of water = 100 g

Required

The percent by mass

Solution

Mass of solution :

$\tt mass~sugar+mass~water=12.45+100=112.45~g$

Percent mass of sugar :

$\tt \%mass=\dfrac{mass~sugar}{mass~solution}\times 100\%\\\\\%mass=\dfrac{12.45}{112.45}\times 100\%=11.07\%$

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3 years ago

Which macromolecules break apart by hydrolysis?

ankoles [38]

Answer:

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

Explanation:

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3 years ago

PLEASE HELP!!!!

Verizon [17]

Endothermic or C, if you would like a reason why, do not hestitate to ask

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3 years ago

True or false The difference between solids and liquids is that solids have definite shape and volume, while liquids have no def

Fantom [35]

Answer:

False

Explanation:

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