Which sequence describes the result of increasing the temperature of a gas in a container? higher kinetic energy ® greater collision force ® higher pressure
lower kinetic energy ® greater collision force ® higher pressure
higher kinetic energy ® lower collision force ® lower pressure
lower kinetic energy ® lower collision force ® lower pressure

A

Explanation:

Increasing the temperatures of the gas causes the molecules to have higher kinetic energy. This means they move more rapidly and therefore the collisions between the particles and with the walls of the container are more forceful (this is how pressure increases).

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o