The answer is Ra
Atomic number for Be is 4
Atomic number for Mg 12
Atomic number for Ra 88
Atomic number for Ba 56
Answer:
Mass is the amount of matter in an object.
Weight is how much an object weighs.
Hope this helps!
Answer:
<h2>The answer is 3.0 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula

From the question
mass of aluminum = 8.1 g
density = 2.7 g/mL
It's volume is

We have the final answer as
<h3>3.0 mL</h3>
Hope this helps you