Question

A pure silver ring contains 2.80×10^22 silver atoms. How many grams of silver atoms does it contain(molar mass of silver =108gmol-1

Answer 1

Answer: Answer is 5.0 gram

Explanation: Refer to the image below.

Hope it helps you.

Answer 2

The answer is 0.36 grams

GIVEN

A pure silver ring contains 2.80×10²² silver atoms.

TO FIND

Mass of silver.

SOLUTION

We can simply solve the above problem as follows;

We know that,

Molar mass of a silver = 6.022 × 10²³ silver atoms.

Therefore,

Weight of 6.022 × 10²³ atoms of silver = 108 gram/mol

Weight of 2.80×10²² atoms of silver =

$\frac{8}{6.022 \times 10^{23} } \times 2.80 \times {10}^{22}$

= 3.6 × 10⁻¹

= 0.36 grams

Hence, The answer is 0.36 grams

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