Question

need help with this ty

Answer 1

Answer:

The correct answer to first question is C

I only know this one.

Explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

I also kno wtge answer to question 7 is A

Answer 2

The correct answer 5. C

Because formula
Moles=m/mol 23+19=42
100g/42 = 2.38 moles


6. Which is not true chemical reactions

Answer : B