Answer
(b), (c) and (d) are correct.
Work Step by Step
(a) $$0.80 atm \times \frac{101,325 \ Pa}{1 \ atm} \times \frac{1 \ mmHg}{133.322 \ Pa} = 608 \ mmHg$$
(b) $$4180 mmHg \times \frac{133.322 \ Pa}{1 \ mmHg} = 5.573 \times 10^{5} \ Pa$$
(c) $$433 torr \times \frac{133.322 \ Pa}{1 \ torr} \times \frac{1 \ mmHg}{133.322 \ Pa} = 433 mmHg $$
(d) $$2.300 atm \times \frac{101,325 \ Pa}{1 \ atm} \times \frac{1 \ torr}{133.322 \ Pa} = 1748 torr$$
(e) $$5.5 atm \times \frac{101,325 \ Pa}{1 \ atm} = 5.6 \times 10^5 Pa$$
