Question

Convert the following into mole:
(1) 102.5 g Ca(NO3)2
. [Molecular weight of Ca(NO3)2 = 164 u]​

Answer 1

There's a formula for thag

Answer 2

The moles of $Ca(NO_3)_2$ are 0.625

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

Given mass = 102.5 g

Molar mass = 164 g

$\text{Number of moles of} Ca(NO_3)_2=\frac{102.5g}{164g/mol}=0.625moles$

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