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2 years ago

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]2 years ago

7 0

Answer:

To be honest I’d don’t even know

Explanation:

Because I’d said so

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PLZ HELP WILL MARK BRAINLIEST

snow_lady [41]

Answer:

The male cone

Explanation:

The male cones, which produce pollen, are usually herbaceous and much less conspicuous even at full maturity.

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2 years ago

The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces

Oxana [17]

Answer:

1. NaN₃(s) → Na(s) + 1.5 N₂(g)

2. 79.3g

Explanation:

1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN₃) into solid sodium and gaseous dinitrogen.

NaN₃(s) → Na(s) + 1.5 N₂(g)

2. Suppose 43.0L of dinitrogen gas are produced by this reaction, at a temperature of 13.0°C and pressure of exactly 1atm. Calculate the mass of sodium azide that must have reacted. Round your answer to 3 significant digits.

First, we have to calculate the moles of N₂ from the ideal gas equation.

$P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{1atm.(43.0L)}{(0.08206atm.L/mol.K).286.2K} =1.83mol$

The moles of NaN₃ are:

$1.83molN_{2}.\frac{1molNaN_{3}}{1.5molN_{2}} =1.22molNaN_{3}$

The molar mass of NaN₃ is 65.01 g/mol. The mass of NaN₃ is:

$1.22mol.\frac{65.01g}{mol} =79.3g$

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2 years ago

Physical science:verification on newton's second law

mezya [45]

Explanation:

finally I have given you answer hope it will help you successfully

6 0

1 year ago

Based on the information that is given, which atom is the table ?

andriy [413]

Answer:

The one with the greatest mass would be the one that has the most things in the nucleus, protons and nutrons

Explanation:

3 0

2 years ago

Use the map to explain where the South American and African plates were located hundreds of thousands of years ago. Africa was m

DaniilM [7]

Africa was more south and west and South America was more south and east of their current positions. I would say this would be because because South America and Africa used to be together in Gondwanaland millions of years ago and then apparently drifted apart as Wegener thought and then with the advent of plate tectonics it became apparent that the mid-Atlantic ridge runs between them and due to spreading along it Africa and S America got separated.

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2 years ago

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