What three things happen in order for a chemical reaction to occur?

Answers

Answer 1

Answer: Three things that should happen for a chemical reaction to occure :
1. Position of electrons must change
2. Chemical bonds must be formed and broken between atoms and
3. No changes should happen to the nuclei

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The chemical formula for aluminum hydroxide? is Al(OH)3. Which of the following is true about aluminum hydroxide?

Answers

Where are the choices?

A strong acid with a concentration of 0.01 Mol/L would have a pH of __________.2

1

3

4

Answers

Answer:

Explanation:

the pH of the strong acid solution will be

pH = -log[H+] = -log[0.01] = 2

A scientist observes that after mixing a solid powder into water, the pH of the newly formed solution is 2.7. What can he infer from this observation?The solution contains an indicator that has a pH of 2.7.
The solid powder contained hydrogen ions.
The pH indicator was used incorrectly.
The powder increased the hydrogen ion concentration of the solution.

Answers

I think the last option is the correct answer. The powder increased the hydrogen ion concentration of the solution. The said statement is the inference we can make from the situation. pH is the measure of hydrogen ions in a solution. The powder when added in the solution most likely dissociates into ions, especially hydrogen ions, thus decreasing the pH.

Answer:

The powder increased the hydrogen ion concentration in the water

Explanation:

The ion that is responsible for acidity is the hydrogen ion. This is why all acids have the hydrogen ion in them. Examples are HCl, HBr, HNO3, H2SO4. So a solution with a higher concentrations of hydrogen ions in solution will be more acidic than one with less hydrogen ions in solution, So clearly in this case, the reason this powder would change the pH of water from 7 to 2.7 would be because there has been an increase in acidity of the solution or an increase in the concentration of hydrogen ions

Is solid copper sulphate a conductor or insulator

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Copper is a conductor, as it conducts electricity.

Complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2)

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the answer to this is 4 Al + 3 O2 = 2 Al2O3 i hope that this helps

Write the complete balanced equation for Manganese & sulfuric acid --> Manganese (II) sulfate & water & sulfur dioxide no spaces
no subscripts
no 1's for coefficients

WILL GIVE BRAINLIEST!

Answers

Answer:

I kinda forgot. I'm sorry if I didn't answer your question.

Explanation:

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