Chemistry, 05.08.2019 17:10, live4dramaoy0yf9
A2.00 mol sample of nitrogen dioxide was placed in an 80.0l vessel. at 200 degrees c, the nigrogen dioxide was 6.0% decomposed according to the equation: 2no2 in equilibrium 2no + o2 calculate the value of kc for this reaction at 200 degrees c.
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
A2.00 mol sample of nitrogen dioxide was placed in an 80.0l vessel. at 200 degrees c, the nigrogen d...
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