Answer:
d. The number of moles
Explanation;
- According to the ideal gas;
P = nRT
where, P is the pressure, n is the number of moles, R is the ideal gas constant and T is the absolute temperature.
- Charles's law and Boyle's law revolve around, volume, temperature and pressure.
- According to Charles's law volume and temperature of a fixed mass of a gas are directly proportional at constant pressure.
- That is; V α T
- While based on Boyle's law, volume and pressure of a fixed mass of a gas are inversely proportional at constant temperature.
- That is, Pα 1/V
- We can, thus see that ideal gas law allows you to calculate number of moles unlike the case with Charles's and Boyle's law.
Percentage
by mass is the amount in mass of a component in a mixture per 100 unit of mass of the total
mixture. Percentage by mass is the same as %w/w. In order to determine this value, we need to know the mass of the substance in question and the total mass of the sample. In this case, we have to know the mass of Fe by doing certain calculations. Then, we divide this value by the total mass given of the ore, 4.05 g and multiply by 100%. It should be expressed as follows:
Percent by mass = mass of Fe in ore / 4.05 g ore sample x 100
However, the question is lacking some information so we cannot really specify the answer.
Answer:
The answer is A: Quantities of thousands are more common than quantities of trillions.
Explanation:
It's just kind of process of elimination. None of the other answers make as much sense
Answer:
1= Volume
= Length x breath x height
= 13.90 x 2.9 x 0.081
=3.26511
2= Density = Mass ÷ volume
= 11.3 ÷ 3.26511
= 3.461 (3d.p)
idk the rest because you haven't shown a picture of the rest
