For an experiment, we need 4.5 L of a 1 M solution of Nacl. How many moles of NaCl do we need?

4.5 moles

Explanation:

Given that:

volume of NaCl = 4.5 L

concentration of NaCl = 1M

(Note that 1M is the same as 1 mol/L

Amount of moles of NaCl = ?

Recall that the concentration of a solution depends on the amount of solute dissolved in a particular volume of solvent.

I.e Concentration in mol/L =

Amount in moles / Volume in liters

1 mol/L = Amount in moles / 4.5 L

Amount in moles = 1 mol/L x 4.5 L

= 4.5 moles

Thus, we need 4.5 moles of NaCl to dissolve in 4.5 L to make 1 M solution of NaCl.

increased stability in the completion of fluorine's outer shell.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)