Answer:
320 mmol
Explanation:
405.0 mL * 1L/1000 mL = 0.4050 L
0.79 M = 0.79 mol/L
0.79 mol/L * 0.4050 L=0.32 mol
0.32 mol * 10^3 mmol/1 mol = 320 mmol
Protium - the most common isotope of hydrogen - has no neutrons in its nucleus.
Answer:
a beryllium ion because the new atom has 4 protons and 4 neutrons since be has a mass number of 9 then it has to form an ion
<span>Number of moles ( of N20) = mass / molar mass = 88.0g / 44.01g/mole = 2 moles
So, there's 2 moles of N20, and in every molecule there's 2 nitrogen atoms -> there's 4 moles of nitrogen in 88.0g of N20</span>
