Answer:
The formula of the compound is Cu₂O.
Explanation:
From the question given above, the following data were obtained:
Mass of compound = 12.5 g
Mass of copper (Cu) = 11.1 g
Mass of oxygen (O) = 1.4 g
Formula of compound =?
The formula of the compound can be obtained as follow:
Cu = 11.1 g
O = 1.4 g
Divide by their molar mass
Cu = 11.1 / 63.5 = 0.175
O = 1.4 / 16 = 0.0875
Divide by the smallest
Cu = 0.175 / 0.0875 = 2
O = 0.0875 / 0.0875 = 1
Therefore, the formula of the compound is Cu₂O.
Answer:
150
Explanation:
A gas will have the lowest rate of diffusion the lowest temperature from a given set of temperature values.
Since 150 is the lowest value, then this represents the lowest rate of diffusion.
The rate of diffusion is related to the prevalent temperature. When gases diffuse, they move from regions of high concentration to the at of low concentration. They must have enough kinetic energy to move in order to diffuse.
The higher the temperature, the more the kinetic energy and higher rate of diffusion.
At atmospheric pressure water boils at 100 degC.
So the water would be gas/vapor/steam.
Group 1 & Group 2 contains only metals
Hope this helps!
Answer:
Diagram Z
Explanation:
A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.
