Answer: 18.02 g/mol
The average mass of one H2O molecule is 18.02 amu. The number of atoms is exact, the number of moles is exact; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.
You would get a wrong calculaton which if you are doing an experiment it can mess with the results
Answer:
The needed energy to melt of ice is 1670 J.
Explanation:
Given that,
Mass of ice = 5 g
Specific latent heat = 334000 J/kg
We need to calculate the energy
Using formula of energy
Where, m = mass
L = latent heat
Put the value into the formula
Hence, The needed energy to melt of ice is 1670 J.
300J
300J
Explanation:
Given parameters:
Weight of Dan = 600N
Weight of Ben = 600N
Pull-up Distance = 0.5m
Unknown:
Work done by Dan =?
Work done by Ben = ?
Solution:
Work done is the force applied to move a body through a distance in the direction of the force.
Work done = force x distance
Work done by Ben =600 x 0.5 = 300J
Work done by Dan = 600x 0.5 = 300J
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Electro magnets are made of coils of wire with electricity passing through them