How many moles of a solute is present in 4.00L of an 8.30M solution

The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2

Explanation:

The Molarity (M) or Molar Concentration is the number of moles of solute per liter of solution; in other words it is the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

Molarity is expressed in units ()  or M.

In this case:

Replacing:

Solving:

number of moles of solute= 8.30 M* 4 L= 8.30 * 4 L

number of moles of solute =33.2

The number of moles of solute present in 4.00 L of an 8.30 M solution is 33.2

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your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.