Iron reacts with hydrochloric acid to produce iron (II) chloride and hydrogen gas. If 2.2 grams of iron react with excess hydrochloric acid in a 10.0 L flask at 25°C, what is the pressure of the hydrogen gas in this flask in mm Hg?

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

12 is it do you think so