Br2 QUESTION 9

Xe has an effusion rate of 0.00139 mol/sec. Which of the gases below would have an effusion rate of 0.00160 mollsec?

o C₂H2

O H2S

Ne

O COCI2

O CH3CI

QUESTION 10

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Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume

Name 3 types of energy you see being used as you look around a classroom