2 years ago

What is the molar mass of a substance?

1 answer:

7 0

Answer:#1

Explanation:

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Valentin [98]

It is a Physical property because like water it changes into a ice cube but it can be melted into water or be turned back into an ice cube.

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Ksivusya [100]

The maximum number of electrons:
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sdas [7]

Answer:

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pentagon [3]

We are given with the mass of Arsine ( $AsH_{3}$

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

$moles=\frac{mass}{molarmass}$

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

$moles=\frac{15}{77.92}=0.192mol$

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2 years ago

e-lub [12.9K]

Answer:

Period: 6 block

Group: f block

Family: Lanthanides

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2 years ago