Calculate the molar concentration of a solution containing 37.1 grams of NaCl in 0.850 liters of water. The molar
mass of NaCl is 58.44 g/mol.

Molarity = 0.74 M

Explanation:

Given data:

Molar concentration of solution = ?

Mass of NaCl = 37.1 g

Volume of water = 0.850 L

Molar mass of NaCl = 58.44 g/mol

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of NaCl:

Number of moles = mass/ molar mass

Number of moles = 37.1 g /58.44 g/mol

Number of moles = 0.63 mol

Molarity = 0.63 mol / 0.850 L

Molarity = 0.74 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.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.