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: Identify element - molar mass values

The molar mass of Zn is approximately 65.4 g/mol, N is approximately 14.0 g/mol, and O is approximately 16.0 g/mol.

Step2: Calculate molar mass of $Zn(NO_3)_2$

In $Zn(NO_3)_2$, there is 1 Zn atom, 2 N atoms and 6 O atoms. So the molar mass $M = 65.4+2\times14.0 + 6\times16.0$.
$M=65.4 + 28.0+96.0$.
$M = 189.4$ g/mol.

Answer:

189.4