Chemistry, 07.01.2021 01:20, dianasmygova
In former times, gas volume was used as a way to measure temperature, using devices called gas thermometers. Consider a gas that has volume of 0.675 L at 35 C and 1 atm pressure. What is the temperature ( in c) of a room where the gas has a volume of 0.635 L at 1 atm
Answers: 2
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, 23.06.2019 06:30, lainnn974
(04.01 lc) which of the following is true about science? (5 points) select one: a. it is not influenced by social conditions. b. it is not determined by external local factors. c. political conditions are unable to influence it. d. economic concerns may prevent it from solving problems.
Answers: 1
In former times, gas volume was used as a way to measure temperature, using devices called gas therm...
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