Answer:
Explanation:
It is to keep the mixture homogeneous
Answer:
Gold
Explanation:
We are given that
Mass of sample ,m=385 g
Volume ,V=20mL
We have to find the coin is gold or yellow brass.
We know that
Density=
Using the formula



Density of coin=19.3g/mL
Density of gold=19.3g/mL
Hence, the coin is gold.
chemical reactions can release heat (a)
Because if all the trees and grasslands are to disappear and turn into deserts then there would be no oxygen for us