Mutual
They are balanced steadily which means they’re at the same point
Answer: The molar mass of each gas
Explanation:
Mole fraction is the ratio of moles of that component to the total moles of solution. Moles of solute is the ratio of given mass to the molar mass.

Suppose if there are three gases A, B and C.
a) 
b) 
c) 
moles of solute =
Thus if mass of each gas is known , we must know the molar mass of each gas to know the moles of each gas.
Answer:
cold
Warm air lifted over a moving cold air mass will produce a _____ front.
Answer: b
Explanation:
By adding heat you are adding more energy
Answer: a force acting between two different molecules
Explanation:
APEX