ANSWER: A
EXPLANATION:
THE FORMULA FOR DENSITY IS MASS DIVIDED BY VOLUME.
D= M/V
So divide the mass by the volume.
For A, 122 divided by 10.5 is 11.62
For B, 132 divided by 14.2 is 9.295
For C, 115 divided by 16.1 is 7.143
For D, 126 divided by 12.7 is 9.921
A IS THE ANSWER BECAUSE ITS THE LARGEST AMOUNG THE OTHERS.
Answer:
50L of H2
Explanation:
First let us generate a balanced equation for the reaction
Cl2 + H2 —> 2HCl
From the equation above,
1L of Cl2 required 1L of H2 for complete reaction.
Therefore, 50L of Cl2 will also require 50L of H2 for complete reaction.
You need to find the abundance. Then, multiply the abundance by 100, and add that to the mass for each isotope. Basically, for each isotope, take the percentage abundance and add it to the mass. Multiply each calculation of these together to get your average atomic mass,
A temperature change in a reaction indicates a “( physical change)”
