how man molecules are there in 450 grams of Na2SO4.
the simple formula to determine of mole is NO OF MOL= GIVEN MASS IN gm/MOL:MASS OF COMP: , AND IMOL = 6.02X1023 . SO, 19. 077X1023 molecules are present in 450 grams of Na2SO4.
The mass of Na2SO4 needed to make 2,5 L of 2,0 M solution is 710,2 g.
142.01 g/mol
just one. If you were given a mass of Na2SO4, then you could find the number of moles by dividing the mass by the molar mass(total of the mass of all elements from the mass on the periodic table). But Na2SO4 by itself is just one mole.
Molar mass Na2SO4 = 142 g/mole0.5 M = 0.5 moles/L = 0.5 moles x 142 g/mole = 71 g/L 350 ml = 0.350 L, therefore 71 g/L x 0.35 L = 24.85 g If using proper significant figures, it would be 20 g
HCl has a molar mass of 36.461 grams per mole. This means that 72.922 grams of HCl are needed per liter of water to make a solution that has a concentration of 2M.
What mass of sucrose C12H22O11 is needed to make 500 ...
The needed mass is 35,549 g.
Calculate the mass (in grams) of sodium sulfide that is needed to make 360ml of a 0.50 mol/L solution
just one. If you were given a mass of Na2SO4, then you could find the number of moles by dividing the mass by the molar mass(total of the mass of all elements from the mass on the periodic table). But Na2SO4 by itself is just one mole.
screw u
Molar mass Na2SO4 = 142 g/mole0.5 M = 0.5 moles/L = 0.5 moles x 142 g/mole = 71 g/L 350 ml = 0.350 L, therefore 71 g/L x 0.35 L = 24.85 g If using proper significant figures, it would be 20 g
HCl has a molar mass of 36.461 grams per mole. This means that 72.922 grams of HCl are needed per liter of water to make a solution that has a concentration of 2M.
This mass is 72,02 g.
What mass of sucrose C12H22O11 is needed to make 500 ...
The sodium chloride mass needed is 292,2 g
If your solution is a total of 414g and 3.06% of it needs to be NaCl, then you just take 414 x .0306 = grams of NaCl. The rest of the grams will be from other species in the solution.
The saturated solution of sodium chloride is 379,3 g for 1 kg solution at 8o oC.
If you think to 2 M and sucrose the needed mass is 51,3 g.
The needed mass is 35,549 g.