Resources Give up
Hint
Check Answer
Question 2 of 19
In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor.
hydrogen + oxygen —— water
If you burn 53.0 g of hydrogen and produce 474 g of water, how much oxygen reacted?
mass of oxygen:
about us
careers
privacy policy
terms of use
contact us help
9:27 A
4/25/2

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa