Answer:
346.g of solution
Explanation:
In this case, if we have 5.2 % by mass it means that in <u>100 g of the solution we will have 5.2 g of glucose</u>. Therefore we can do the calculation:
<u>5.2 g of glucose = 100 g of solution</u>
So, if we need 8 g of glucose we had to have 346.15 g of solution
This logic can work for all types of solutions. By mass (as in this case), by volume or mass/volume.
I hope it helps!
Answer:
The answer to your question is below
Explanation:
Material Classification Reason
Crude oil Mixture Because we know that crude oil
is composed of different substances.
Butane Compound Because it is composed of carbon
and hydrogen
Dodecane Compound Because it is composed of carbon
and hydrogen.
Octane Compound Because it is composed of carbon and
hydrogen.
Benzene Compound It is also composed of carbon and
hydrogen.
Gasoline Mixture It is a combination of hydrocarbons
Kerosene Mixture It is a combination of hydrocarbons
Oxygen Element We can find it in the periodic table.
Carbon dioxide Compound It is composed of carbon and oxygen.
Water Compound It is composed of hydrogen and
oxygen.
Answer:
2 and 3 because there are the protons and neutrons which have a greater mass than the electrons which are found in the locations 1 and 4. The atom contains a nucleus, which is made from protons and neutrons, and electrons which are found around the nucleus. The mass of the atoms is concentrated in the very tiny space represented by the nucleus. Of course the electrons have a mass too, but is very small compared to the protons and neutrons, and we usually neglect its mass.
Answer:
8.0 g
Explanation:
To convert moles to grams, you need to use the molar mass. The molar mass of sulfur is 32.06. The molar mass is the atomic mass of the atom.
(0.25 mol) × (32.06 g/mol) = 8.015 g
Round for significant figures.
8.015 g ≈ 8.0 g
