Chemistry, 26.03.2020 15:34 kimjp56io5
How many grams of K2O will be produced from 0.50 g of K
and 0.10 g of O2?
Answers: 1
Chemistry, 22.06.2019 07:20
Why does his teacher ask him to balance the equation by including the correct coefficient
Answers: 1
Chemistry, 22.06.2019 11:40
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.)
Answers: 1
Chemistry, 22.06.2019 12:10
If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?
Answers: 3
How many grams of K2O will be produced from 0.50 g of K
and 0.10 g of O2?...
and 0.10 g of O2?...
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