<span>Since at STP, the molar volume is 22.4 L, all of these containers have one mole of gas. The one with the highest atomic or molecular weight is the heaviest: :
A) H2 - 2 g/mole
B) N2 - 28 g/mole
C) O2 - 32 g/mole
D) CO2 - 44 g/mole
E)He - 4 g/mole
Ans will CO2 - 44 g/mole with the highest atomic or molecular weight is the heaviest.</span>
Pressure
Explanation:
Pressure is a measure of force per unit area.
Pressure is defined as the force exerted on a body across a unit area. The unit of pressure is N/m² or Pascal.
Pressure = 
The more the force acting on a body the more the pressure felt. A small surface area and a large force increases pressure on a body.
it is right to say that pressure is proportional to force but inversely proportional to area.
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Answer : We can produce 125.7 g of
.
Explanation : The reaction will be

The molecular mass of
is 64.1 g/mol
and molecular mass of
is 34.1 g/mol
For every mole of
we would need twice of
moles, so for every 3 moles of
we need 16 moles of 
Now, we can calculate number of moles
2.61 X (3/16) = 0.49 moles
Here, the molecular mass of
is 256.8 g
multiplying it with the number of 0.49 moles we get, 256.8 X 0.49 = 125.7 g of
.
Hence, 125.7 g of
will be produced.
Answer:
the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object.
Explanation: