<span>a pure substance that can be separated into different elements by chemical means</span>
Answer:
Density = mass/volume
= 44/22.4
= 1.96 gram/liter
The density of the Carbon Dioxide at S.T.P. (Standard Temperature and Volume) is 1.96 gram/liter.
Answer:
84.6 mL
Explanation:
To get the total volume of soultion we must add the given volumes together.
4.21 mL + 80.4 mL = 84.6 mL
Answer:
The answer is A
Explanation:
Let's break this down. . .
-The lower the pH, the more acidic.
-So, the pH of 2 is more acidic than 3.
-Then, it's pretty obvious that the concentration with more acidic substance will be greater or higher than the other substance.
- As a result, the concentration of pH 2 will be greater or higher than the concentration of pH 3.
If you want the "mathematical" form then here:
Concentration
A pH of 2 would be 10 to the -2; 10^-2 which will equal 0.01
A pH of 3 would be 10 to the -3; 10^-3 which will equal 0.001
Which one is greater than the other?
A substance with a pH of 2 has a 10 times higher concentration of H* than a substance with pH of 3.
Hey there!:
Copper plating on Zinc will occur via this simple reaction:
Cu²⁺ + 2 e⁻ ⇌ Cu
When a species gains electron, it is reduced. Its oxidation state is decreased. For example, in the above reaction Cu2+ gained 2 electron to get reduced to Cu. Its oxidation state changed from +2 to 0. Hence it is a reduction reaction.
So, the correct answer is :
The copper II ions gain two electrons and are reduced.
Answer B
Hope this helps!