4 is correct for this one
Answer:
It would be 5.8 times 10^9cm
The law of conservation of matter basically states that matter can’t be created or destroyed, only changed in form, so you can rule out any option that mentions destroying or creating matter. That leaves only option A. Atoms cannot be created or destroyed by chemical reactions.
Solution :
An 
reaction is a type of 
in organic chemistry where the enol or an enolate ion reacts with the carbonyl compound and forms a 
-hydroxyaldehyde or a -hydroxyketone, and then followed by a dehydration to give conjugated enone.
Benzaldehyde reacts with methylketone and forms two products:
Answer:
<h3>m=5k.g</h3>
Explanation:
<h3>F=m×a sooo m=f÷a</h3><h3>m=15k.g.mls^2÷3m/s^2</h3><h3>m=5k.g</h3>
