9
Explanation:
cause 2 + 2 is equal to 9
Number of moles = mass of Ni /molecular mass of Ni
mass of nickel = 86.4 g
molecular mass of nickel = 58.69
number of moles of Ni in 86.4 g
=86.4/58.69
=1.472 mol
(rounded to four significant figures instead of three because the first digit of the answer starts with a 1).
Answer:
Double replacement reaction
Explanation:
This is what is known as a double replacement reaction. The two parts of each molecule separate and recombine to form two new compounds. For instance,
separates into
and
, while
separates into
and
, and then they recombine with the other compound.
Hope this helps!
Since it is a phase change, use the mHfusion equation.