Question

the chemical formula for zinc nitrate is:
zn(no₃)₂
calculate the molar mass of zinc nitrate.
round your answer to 1 decimal place.
g·mol⁻¹

Explanation:

Step1: Determine the atomic masses

The atomic mass of \(Zn\) is \(65.38\space g/mol\), \(N\) is \(14.01\space g/mol\), and \(O\) is \(16.00\space g/mol\).

Step2: Calculate the molar mass

For \(Zn(NO_3)_2\), there is \(1\) \(Zn\) atom, \(2\) \(N\) atoms (\(2\times1\) from \(NO_3\) group and there are \(2\) \(NO_3\) groups), and \(6\) \(O\) atoms (\(3\times2\) from each \(NO_3\) group and there are \(2\) \(NO_3\) groups).

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Answer:

\(189.4\space g/mol\)