Answer:
80÷4=20 Helium atoms
Explanation:
Because one helium atom is a quarter of of one bromine atom
Answer:
electrons are fermions, they can only access an energy level if it has not already been occupied by another electron. Thanks to this principle, there is a minimum energy level within the atom and it is not possible for an electron to collapse to the nucleus because it cannot exceed this} threshold.
Explanation:
I hope I have helped you.
Answer:
It's because to make sense money.
It's to measure how much money we make.
Molar mass Na₂CO₃ = 106.0 g/mol
M(Na₂CO₃) = molarity x volume x molar mass
M(Na₂CO₃) = 0.250 x 2.00 x 106.0
M (Na₂CO₃) = 53 g
hope this helps!
They can probably use those radioactive measuring things. But they will still use proper caution around it.