How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?
please
Yes, my calculator reads 0.2109 g also, but I would round to 0.211 grams because you are allowed only 3 significant figures (comes from the 114 and 1.85, both 3 s.f. in those digits).
moles = M x L
so 114 ml is 0.114 L
1.85x 0.114 = 0.2109
??
To determine the number of moles of KCl in a given solution, you need to use the formula:
moles = concentration (M) × volume (L)
However, the given volume is in mL, so we need to convert it to liters first. The conversion factor is 1 L = 1000 mL, so:
114 mL ÷ 1000 mL/L = 0.114 L
Now we can use the formula:
moles = concentration (M) × volume (L)
moles = 1.85 M × 0.114 L
moles = 0.2111 mol
Therefore, there are approximately 0.2111 moles of KCl in 114 mL of a 1.85 M KCl solution.