Hmm. This is very unspecific but it could either be indicating the pH of the solution or just saying it is an aqeous solution.
Answer:

Explanation:
Hello,
In this case, the rate is computed as:

As the reaction is analyzed during the first 30 seconds, the average rate will be:

Which negative since the cupric chloride is a reagent.
Best regards.
Answer:
It has 4
Explanation:
the carbon Lewis dot struc has 4 around it it looks like this
. .
C
. .
Answer:
The number of <u>protons</u> in the nucleus of an atom is the atomic <u>number</u> of that element. Because atoms are electrically neutral, the number of protons and <u>electrons</u> in an atom are equal. The sum of the <u>protons </u>and neutrons is the mass number.