Chemistry, 06.11.2020 01:20 girlchamp654
20 mL of a gas at 200K is heated until the new volume is 55 mL. What is the final temperature of the gas?
answer options:
4.0 K
5.5 K
400K
550 K
Answers: 3
Chemistry, 22.06.2019 11:40
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 01:30
Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.
Answers: 1
20 mL of a gas at 200K is heated until the new volume is 55 mL. What is the final temperature of the...
Biology, 16.07.2019 17:00
Advanced Placement (AP), 16.07.2019 17:00
Business, 16.07.2019 17:00
Social Studies, 16.07.2019 17:00
Business, 16.07.2019 17:00
History, 16.07.2019 17:00
History, 16.07.2019 17:00
Computers and Technology, 16.07.2019 17:00
Mathematics, 16.07.2019 17:00
Business, 16.07.2019 17:00