Answer:
CrO2
Explanation:
Firstly, we need to find the mass of the oxygen in the oxide. That is 4.94 - 3.06 = 1.88g
Now, we will need to get the number of moles and this can be obtained by dividing the masses by the atomic mass units. The atomic mass units of chromium and oxygen are 52 and 16 respectively. The division is obtained as follows:
Cr = 3.06/52 = 0.06
O = 1.88/16 = 0.12
We then divide by the smallest, which is that of the chromium.
Cr = 0.06/0.06 = 1
O = 0.12/0.06 = 2
The simplest formula is the empirical formula and it is thus given by CrO2
The last, because equilibrium is equal so it would have to be at an equal rate.
Answer:
Mass measures the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg). Volume measures the amount of space that a substance or an object takes up.
Explanation:
A) divide by 100. A meter is 100 centimeters so that’s how you can tell
