Answer:
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 30 g
volume= 25 mL
We have
We have the final answer as
Hope this helps you
6
The sum of the protons and neutrons
mass number= proton number + neutron number
Gas
Answer: a. atominc number= protons= 33
neutrons= mass- atominc number
80-33= 47 neutrons
b.35 protons
46 neutrons
hope this helps