Molarity and molality both describe the concentration of a substance in terms of moles.
Molarity describes the number of moles of a substance per unit of volume, typically per liter (mol/l).
Molality describes the number of moles per unit of mass, typically kilograms (mol/kg).
When determining the molality of a solution, mol/kg can be obtained by finding the number of moles in the substance, and dividing that number by the the total weight in kilograms of that substance.
When determining the molarity of a solution, mol/l can be obtained by dividing the number of moles in a substance by the total volume in liters of that substance.
The initial velocity given one object will make it hit the ground first.
<h3>What is velocity?</h3>
Velocity is the displacement of a body in a given time interval.
Velocity is a vector quantity since displacement is also a vector quantity.
- Velocity = Displacement/time
Two objects are released from a certain height above the ground.
One is given an initial velocity while the other had no initial velocity.
The two objects are accelerated to the same extent by gravity.
However, because of the initial downward velocity of the first object, it will hit the ground first.
In conclusion, the initial velocity given one object will make it travel faster than the other object.
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Answer:
B. 0.014 kg
Explanation:
I GOT IT RIGHT IN MY ASSESMENT QUESTIONS
Answer:
Explanation:
The process is isothermic, as P V = constant .
work done = 2.303 n RT log P₁ / P₂
= 2.303 x 5 / 29 x 8.3 x 303 log 2 / 1 kJ
= 300.5k J
This energy in work done by the gas will come fro heat supplied as internal energy is constant due to constant temperature.
heat supplied = 300.5k J
specific volume is volume per unit mass
v / m
pv = n RT
pv = m / M RT
v / m = RT / p M
specific volume = RT / p M
option B is correct.