Question

Please answer 4rth and 5th answer
I will mark it as brainliest.

Answer 1

Answer:

okkkkkkk yessssssss. mmmmm

Explanation:

answer is 5÷14+5-2 = no

Answer 2

Answer:

4) In the first oxide, 57.1 part by mass of oxygen with 42.9 parts by mass of carbon

Therefore-1 part oxygen will combine with carbon=42.9/57.1=0.751

Similarly In the second oxide contains oxygen72.7 parts with 27.3 parts carbon

One part oxygen combines with carbon =27.3/72.7=0.376

The ratio of the masses of carbon that combine with the same mass oxygen is =0.751:0.376

Or 2:1, since this is a simple whole numbers ratio, so the above data illustrate the law of multiple proportions.

5) a)0.17g

b)0.182g