Answer:
1.89 nol Cu(NO3)2
Explanation:
if you calculate it it will be 1.89
You need the Avogadro's number. I can't remember exactly the calculation.
Answer:
Option (2) 2
Explanation:
NO3- + 4H+ + Pb → Pb2+ + NO2 + 2H2O
The equation above can be balance as follow:
There are 3 atoms of the left side and a total of 4 atoms on the right side. It can be balance by putting 2 in front NO3- and 2 in front of NO2 as shown below:
2NO3- + 4H+ + Pb → Pb2+ + 2NO2 + 2H2O
Now the equation is balanced.
The coefficient of NO2 is 2
Answer:
molecule. The smallest part of a compound is the molecule. A molecule retains all the properties of that compound.
Explanation:
thanks me later
