3 years ago

Are these physical or chemical changes?

Chemistry

2 answers:

Mnenie [13.5K]3 years ago

6 0

Chemical i pretty sure! please do more searching if u think i’m wrong.

Darya [45]3 years ago

5 0

All are chemicalllllllll

You might be interested in

Is/are determined by a genetic trait passed on from parents to their children

Darya [45]

Answer:genes

Explanation:

7 0

3 years ago

The energy stored in molecular bonds is called _____.

makvit [3.9K]

Correct answer is chemical energy.

Reason:

For the chemical reactions to occur, energy is to be supplied for breaking and reorganization of bonds. This energy can be in form of heat, light, etc. Since, breaking of bonds results in chemical reactions to occur, t<span>he energy stored in molecular bonds is called Chemical energy.</span>

8 0

3 years ago

Read 2 more answers

How many liters of oxygen are required to react completely with 14.8 mol of Al?

Bond [772]

Answer:

296 L

Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

4Al + 3O₂ ⟶ 2Al₂O₃

n/mol: 17.4

1. Moles of O₂