Question

How many moles of xenon trioxide are present in 1. 69 grams of this compound.

Answer 1

0.00944

Explanation:

Xenon mass number on the periodic table: 131.29

Oxygen mass number: 16.00

Add them to find the molar mass of xenon trioxide: 131.29+3(16) = 179.29g/mol

Convert this to moles

`1.69g * (mol)/(179.29g) = 0.00944mol`