Author Question: A physics experiment is conducted at a pressure of 16.8 kPa. What is this pressure in mmHg? (Read 103 times)

Wadzanai · **on:** Mar 21, 2021

Question 1

A mixture of KCl and KClO₃weighing 1.37 grams was heated; the dry O₂generated occupied 143 mL at STP. What percent of the original mixture was KClO₃? Consider that KClO₃decomposes as follows:

2KClO₃(s) → 2KCl(s) + 3O₂(g)

◦ 38.1%
◦ 57.1%
◦ 85.7%
◦ 10.4%
◦ 23.2%

Question 2

A physics experiment is conducted at a pressure of 16.8 kPa. What is this pressure in mmHg?

◦ 22.1 mmHg
◦ 2.24 mmHg
◦ 1.68 × 10⁴ mmHg
◦ 126 mmHg
◦ 2.21 × 10^–2 mmHg

bpool94 · **Reply #1 on:** Mar 21, 2021

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