Chemistry, 29.01.2020 12:03 lydiakegg454
Which of the following is an ionic compound h2o brcl mgf2 c2h4 or nh3
Answers: 1
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
Chemistry, 22.06.2019 14:30, Playboycxm
Chemistry worksheet - i am not sure what they are asking for exactly?
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Chemistry, 23.06.2019 03:30, antoinetteee03
Name atleast 3 type of energy associated with the microwave
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Which of the following is an ionic compound h2o brcl mgf2 c2h4 or nh3...
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