Why does temperature decrease with higher altitude?
air is held strongly together by gravity, so there is less heat transfer.
air density is lower, so there is less heat transfer.
air density is higher, so there is less heat transfer.
air pressure is higher, so there is less heat transfer.

Option (b) is the correct answer.

Explanation:

Radiation is absorbed by the ground of Earth and this heats the surroundings along with tropospheric air through conduction and convection process.

But as we go at higher altitude then gases present in the troposphere absorb very less amount of incoming solar radiations.

As a result, air molecules move farther away from each other and there will be decrease in density of air due to less heat transfer.

Thus, we can conclude that temperature decrease with higher altitude as air density is lower, so there is less heat transfer.  

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