Explanation:
If the density of the object is more than that of water, it will sink. Otherwise it will float. The density of water is 1 g/mL.
Substance 1,
Mass, m = 450 g, Volume, V = 90 mL
Density = mass/volume
So,
It will sink.
Substance 2,
Mass, m = 35 g, Volume, V = 70 mL
Density = mass/volume
So,
It will float.
Substance 3,
Mass, m = 24 g, Volume, V = 12 mL
Density = mass/volume
So,
It will sink.
The density of the cube in grams per cubic centimeter = D = 2 gram / cm³
Explanation:
The Volume Of the Cube is V = a³
Its is given that the cube has sides measuring 5 cm each side.
V = ( 5 )³
= 5cm 5cm 5cm
V = 125 cm³
The Density Formula, Density= Mass / Volume.
Given that this cube has a mass of 250 grams.
to calculate density
D = ρ = m / V
= 250 / 125
= 2
D = 2 gram / cm³
Answer:
8.00 moles.
Explanation:
The ratio of Fe to FeO is 2:2 = 1:1, so 8 moles are produced.
Answer:
<h3>The answer is 14036.54 moles</h3>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 8.45 x 10^27 molecules of H2O
We have
We have the final answer as
<h3>14036.54 moles</h3>
Hope this helps you