Chemistry, 14.09.2019 11:30 xwilliams83
Determine the amount of water that must be added to a 2-litre solution of sulphuric acid to dilute it from a ph of 2.7 to a ph of 3.
Answers: 2
Chemistry, 21.06.2019 20:00, lorenaandreahjimenez
The answer for #3 is c but i don't know why
Answers: 1
Chemistry, 21.06.2019 22:30, haileywebb8
If you want to create an electrical current, which situation would produce a solution capable of this
Answers: 3
Chemistry, 22.06.2019 11:40, Wemaybewrong
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
Determine the amount of water that must be added to a 2-litre solution of sulphuric acid to dilute i...
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