how many moles of NaCl are contained in 1.9L of a 1.7M NaCl solution

mols = M x L = ?

To calculate the number of moles of NaCl, you can use the formula:

moles = concentration (M) x volume (L)

In this case, the concentration (M) is given as 1.7M, and the volume (L) is given as 1.9L. So, to find the number of moles of NaCl:

moles = 1.7M x 1.9L

Simply multiply the given concentration by the given volume:

moles = 3.23 mol NaCl

Therefore, there are approximately 3.23 moles of NaCl in 1.9L of a 1.7M NaCl solution.