Which statements correctly describe atmospheric pressure? a) it’s the same everywhere in the atmosphere. b) it pushes on all objects that are on earth’s surface. c) it can be measured in atmospheres or kilopascals. it pushes on objects in all directions. d) it’s a result of gas particles losing energy.

The correct answers are options B and C, that is, it pushes on all the objects that are on the surface of the Earth, and it can be measured in kilopascals or atmospheres.

Explanation:

The atmospheric pressure or the barometric pressure refers to the pressure found inside the Earth's atmosphere. With the increasing height, the atmospheric pressure decreases. In meteorology, the barometer is an instrument, which is used to find the atmospheric pressure. Atm or atmospheric pressure is the force per unit region by the weight of air above that location, and kPa or kilopascal refers to a metric system pressure unit, which is equivalent to 1000 force of Newton per square meter.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.