Which phrase describes the changes that take place when a gas condenses?
Choose the correct answer
A: loss of energy and increased freedom of particle motion B: gain of energy and increased freedom of particle motion. C: loss of energy and decreased freedom of particle motion
D: gain of energy and decreased freedom of particle motion
Answers: 2
Chemistry, 22.06.2019 01:30
An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.
Answers: 1
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, 22.06.2019 19:40
What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles
Answers: 2
Which phrase describes the changes that take place when a gas condenses?
Choose the correct answer<...
Biology, 22.02.2021 22:50
History, 22.02.2021 22:50
Mathematics, 22.02.2021 22:50
Mathematics, 22.02.2021 22:50
Mathematics, 22.02.2021 22:50
Mathematics, 22.02.2021 22:50
Mathematics, 22.02.2021 22:50
History, 22.02.2021 22:50
Biology, 22.02.2021 22:50
History, 22.02.2021 22:50