Molarity = moles of solute/Liters of solution
Or, for our purposes,
Moles of solute = Liters of solution * Molarity
Moles Na2CO3 = 10.0 Liters * 2.0 M
= 20 moles Na2CO3
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Molarity = moles of solute/volume of solution( In liters, in this case)
10 M whatever = moles of solute/2 Liters
= 20 moles of whatever
.5M
95,474 moles
.0104 mol
The atomic weight of magnesium is 24.31; therefore, the number of moles in 100 gm is 100/24.31 = 4.11, to the justified number of significant digits.
0.46 moles (230/100 x 2)
1 mol = 118.94 1 mol / 118.94 = 1.70 / x G = 202.10g
95,474 moles
100/150.158 is 0.666 moles
if you have 100 liters how many moles does that equal?
.0104 mol
100 moles of NaCl
moles = mass/Mr moles = 100/(23+16+1) moles of NaOH = 2.5mol
There would be 0.75 moles in 1 liter of solution. You have 100 mL which is in fact 0.1 liters. so you would have 0.1 of 0.75 moles. 0.1 x 0.75 = 0.075 moles.
4.00
The atomic weight of magnesium is 24.31; therefore, the number of moles in 100 gm is 100/24.31 = 4.11, to the justified number of significant digits.
0.46 moles (230/100 x 2)
The numbers of moles in 100 kg of sodium is 4 349,76.
1 mol = 118.94 1 mol / 118.94 = 1.70 / x G = 202.10g