Which of the following explains the VSEPR geometry of a carbon tetrachloride
molecule?
A) It...
Which of the following explains the VSEPR geometry of a carbon tetrachloride
molecule?
A) It is bent because there are four bonded pairs around carbon.
B) It is tetrahedral because there are four bonded pairs around carbon.
C) It is bent because there are two bonded pairs and two lone pairs around carbon.
D) It is tetrahedral because there are two bonded pairs and two lone pairs around carbon.
Answers: 2
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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
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