Aballoon with a volume of 8.00 l is known to contain 1.200 moles of gas. how many moles of gas remain if some of the gas is released and the new volume is 5.25 l. assume temperature and pressure remain constant

Avagadros law states that at constant pressure and temperature conditions the volume is directly proportional to number of moles of gas

where v1 is volume and n1 is number of moles at first instance

v2 is volume and n2 is number of moles after some of the gas is released

substituting the values in the equation

n2 = 0.788 mol

after some of the gas is released only 0.788 mol remain

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

answer; economic order quantity;