Answer
a. $$ 809.0 \space mmHg$$
b. $$ 1.064 \space atm$$
c.$$ 809.0 \space torr$$
d. $$ 107.9 \space kPa$$
Work Step by Step
a. $$ 31.85 \space in Hg \times \frac{1 \space atm}{29.92 \space in Hg} \times \frac{760 \space mmHg}{1 \space atm} = 809.0 \space mmHg$$
b. $$ 31.85 \space in Hg \times \frac{1 \space atm}{29.92 \space in Hg}= 1.064 \space atm$$
c.$$ 31.85 \space in Hg \times \frac{1 \space atm}{29.92 \space in Hg}\times \frac{760 \space torr}{1 \space atm} = 809.0 \space torr$$
d. $$ 31.85 \space in Hg \times \frac{1 \space atm}{29.92 \space in Hg}\times \frac{101.325 \space kPa}{1 \space atm} = 107.9 \space kPa$$