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pshichka [43]
3 years ago
8

Calculate the number of atoms of bromine in 1.37 g of bromine. Give your answer in scientific notation. Enter your answer in the

provided box. x 10 (select)atoms Br
Chemistry
1 answer:
steposvetlana [31]3 years ago
4 0

<u>Answer:</u> The number of atoms of bromine present in given number of mass is 1.03\times 10^{22}

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

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

Given mass of bromine = 1.37 g

Molar mass of bromine = 79.904 g/mol

Putting values in above equation, we get:

\text{Moles of bromine}=\frac{1.37g}{79.904g/mol}=0.0171mol

According to mole concept:

1 mole of an element contains 6.022\times 10^{23} number of atoms.

So, 0.0171 moles of bromine will contain = 0.0171\times 6.022\times 10^{23}=1.03\times 10^{22} number of bromine atoms.

Hence, the number of atoms of bromine present in given number of mass is 1.03\times 10^{22}

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