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Agata [3.3K]
3 years ago
9

What is the molecular formula for a compound with an Empirical formula of C2H3, if the true Molar Mass is 81 g/mol:

Chemistry
1 answer:
GREYUIT [131]3 years ago
7 0

Answer:

To be honest I’d don’t even know

Explanation:

Because I’d said so

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Kamila [148]

it would be b hope i helped

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3 years ago
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Based on the octet rule, nitrogen most likely forms a __ion.
Greeley [361]

Answer:

b) N3-

Explanation:

The octet rule stipulates that a chemical specie is stable if it has eight electrons in its outermost shell.

Nitrogen belongs to group 15. This means that it has five electrons in its outermost shell. The formation  N3- means that it accepted three electrons.

This brings the total number of outermost electrons to eight in accordance with the octet rule.

4 0
3 years ago
A sample of cesium carbonate, weighing 3.80 g, requires 1.90 g of hydrogen bromide gas to completely decompose to water, cesium
vladimir1956 [14]

Answer:

Choice A. 0.50 g.

Explanation:

According to the question, the reaction here converts

  • caesium (cesium) carbonate and
  • hydrogen bromide

to

  • cesium bromide,
  • carbon dioxide, and
  • water.

By the Law of Conservation of Mass, matter can neither be created nor destroyed in a chemical reaction. (Shrestha et. al, Introductory & GOB Chemistry, Chemistry Libretexts, 2019.)

In other words, the mass of the reactants, combined, shall be the same as the mass of the products, combined.

What's the mass of the reactants?

\rm \underbrace{\rm 3.80\;g}_{\mathrm{Cs_2CO_3}} + \underbrace{\rm 1.90\; g}_{\mathrm{HBr}} = 5.70\;g.

What's the mass of the products?

Let m(\mathrm{CO_2}) represent the mass of carbon dioxide produced in this reaction.

The mass of the products will be:

\rm \underbrace{\rm 5.20\;g}_{\mathrm{CeBr}\text{ and }\mathrm{H_2O}} + \underbrace{m(\mathrm{CO_2})}_{\mathrm{CO_2}}.

The two masses shall be equal. That is:

\rm 5.20\; g + \mathnormal{m}(\mathrm{CO_2}) = 5.70\;g.

m(\mathrm{CO_2}) = \rm 0.50\;g.

In other words, by the Law of Conservation of Mass, the mass of carbon dioxide produced in this reaction will be \rm 0.50\;g.

8 0
4 years ago
Help me please I really need help and answer only if u know the answer
Ahat [919]

Answer:

They have similar DNA

Explanation:

DNA is what makes a reasons appearance

4 0
3 years ago
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iren2701 [21]
Can you restate the questions again ?
4 0
3 years ago
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