Which of the models best represents the gravitational force at O mins? bag
s
A
d
he
Earth
Bag
1m
B
Earth
Bag

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.

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

What is the molar mass of a gas that has density of 2.054 g/l