Answer:
It increases the reaction rate by lowering the activation energy for a reaction.
Please see the picture below in order to easier to understand.
Explanation:
However, note that there are positive and negative catalyst. The question above is just about the positive catalyst.
..
Hope this answer can help you.
15 I think because of what you ask I’m a college student so yea
B is the best answer to your question
Answer:
0.13M HNO3 is the concentration of the unknown
Explanation:
Nitric acid, HNO3, reacts with NaOH as follows:
HNO3 + NaOH → H2O + NaNO3
<em>Where 1mol HNO3 reacts with 1mol NaOH</em>
<em />
To find the concentration of HNO3 we must find, as first, the moles NaOH added = Moles HNO3 in the solution:
30mL * (1L / 1000mL) * (0.15mol / 1L) = 0.0045 moles HNO3
In 35.0mL = 0.035L:
0.0045 moles HNO3 / 0.035L =
0.13M HNO3 is the concentration of the unknown
