Is oxygen gas (O2) a compound or an element? Is hydrogen gas (H2) a compound or an element?
1 answer:
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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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Explanation:
According to Buoyance equation,
m =
where, m = true mass
m' = mass read from the balance = 17.320 g
= density of air = 0.0012 g/ml
= density of the balance = 7.5 g/ml
d = density of liquid octane = 0.7025 g/ml
Now, putting all the given values into the above formula and calculate the true mass as follows.
m =
=
=
= 17.317 g
Thus, we can conclude that the true mass of octane is 17.317 g.