What is the mass of 3.50 moles of silicon dioxide (SiO2)? The Periodic Table
O A. 210.3 g
B. 2.11 x 1024 g
C. 4.43 x 1026 g
O D. 3.59

A , 210.3 g

Explanation:

Given data:

Number of moles of SiO₂  = 3.50 mol

Mass of SiO₂ = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of SiO₂ = 60.08 g/mol

by putting values,

3.50 mol = mass/60.08 g/mol

Mass = 3.50 mol × 60.08 g/mol

Mass = 210.3 g

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: