Calculate the molarity of 7.8 moles of MgCl2 in 3.6 L of solution. Report your answer with 3
decimal places

The molarity of the solution is: 2,167 M.

Explanation:

Molarity is a concentration measure that expresses the moles of solute per liter of solution. In this case it is calculated with the simple rule of three:

3,6 L solution 7,8 moles of MgCl2

1 L solution   x= (1 L solution x 7,8 moles of MgCl2)/3,6 L solution

x=2,167 moles of MgCl2 ---> The solution is 2, 167 M

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.