Lithium hydroxide is used in alkaline batteries. Calculate the molarity of a solution prepared by dissolving 1.495 moles of LiOH in enough water to give a final volume of 750. mL. 1) 1.99 M
2) 1.50 M
3) 1.12 M
4) 0.502 M
5) 0.00199

1)1.99 M

Explanation:

Molarity  is given as = moles solute/Liter solution

The solute which is LiOH is already given in moles as 1.495 moles

Given that solution  is  750 mL,  we convert to liters.

Liters of the solution=  mL of the solution   x (1 L/1000 mL)

750 mL x (1 L/1000 mL)

0.75 L

Molarity = moles solute/Liter solution

Molarity = 1.495 moles of LiOH/0.75 L of solution

Molarity = 1.99M

The molarity of this solution is 1.99M (moles per liter).

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→