Answer:
Your two answers are numbers of protons and electron and the second one is the atomic mass and weight.
Explanation:
God bless you are you got this
Yes its worth the trouble. We breathe in Oxygen and give out CO2. We burn wood. Our bikes rust.
Answer:
When a copper is drawn into wire the only change that occurs is change in its shape and size no change will take place into its composition that is the wires are still possessing the properties of copper metal. Thus, a physical change takes place when copper is drawn into wire.
<em>i think the answer is b </em>
Answer:
The density is 5 g/cm3
Explanation:
The density (δ) is the ratio between the mass and the volume of a compound:
δ=m/v= 10 g/2 cm3= 5 g/cm3