Answer:
C
Explanation:
an impure substance made through chemical process
Cold water<span> is </span>more dense<span> and will sink in room-temperature </span>water<span>. hope it helps :)</span>
Answer:
0.264moles
Explanation:
number of moles= given mass/molar mass.
Molar mass of Cu2SO4= 63.5+32+4(16)=159.5
moles(n)=42.2/159.5= 0.264moles