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Arisa [49]
3 years ago
14

Which substance has a molar mass of 33.99 g/mol?

Chemistry
1 answer:
alex41 [277]3 years ago
6 0

Answer:

PH₃.

Explanation:

Hello.

In this case, among the options:

PH₃, GaF₃, SF₂ and CO₂

We compute their molar masses by adding the atomic masses of the constituting elements by their subscripts:

M_{PH_3}=m_P+3*m_H=30.97+3*1.01=34.00g/mol\\\\M_{GaF_3}=m_{Ga}+3*m_F=69.72+3*19.00=126.72g/mol\\\\M_{SF_2}=m_{S}+2*m_F=32.07+2*19.00=70.07g/mol\\\\M_{CO_2}=m_{C}+2*m_O=12.01+2*16.00=44.01g/mol

Thus, the answer is PH₃.

Best regards.

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Nitrogen monoxide, NO, is formed in automobile exhaust by the reaction of nitrogen and oxygen in the air: N2 (g) + O2 (g) ↔ NO (
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Answer:

The equilibrium concentration of NO is 0.001335 M

Explanation:

Step 1: Data given

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Step 2: The balanced equation

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Step 3:  Concentration at the equilibrium

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The molecular compound in the given statement is CH₆N₂.

<h3>What defines a molecular compound?</h3>

Chemical compositions of molecules that make up molecular compounds reflect the number of elements that are really bound together within the molecule. Due to the sides and angles of a atoms' links to one another, the complex has a certain structure.

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Consider 140.22 g/mol of compound

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To know more about Molecular compound visit:

brainly.com/question/23088724

#SPJ1

The complete question is -

A compound with molar mass 140.22g/mol is known to contain 51.38% carbon, 8.64% hydrogen and 39.97% nitrogen. Find the molecular of this compound.

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