Answer
（a) 1.61$\times$ $10^3 g $
Work Step by Step
Solving for mass:
Density formula=$\frac{mass}{volume}$
Convert:
1L= 1000mL, so 1.75L=1750 mL
Use density formula
0.921 (g/mL) =$\frac{x}{1750}$
0.921$\times$ 1750=1611.75 g
Scientific notation: 1.61$\times$ $10^3$
