The molar mass of dichlormethane is 84,93 g.
The formula for methylene chloride is CH2Cl2
I assume you mean the molecular mass. Its molecular mass is 84.9g/mol
Atomic mass of Sulphur is 32 1 mole = Atomic mass of sulphur No. of moles = Given mass/ Atomic mass No.of moles= 5/32 0.15 moles
24.5 mL of a solution 1.0 M bromine contain 0,0245 moles.
number of moles = mass of the material/molar mass
The formula for methylene chloride is CH2Cl2
I assume you mean the molecular mass. Its molecular mass is 84.9g/mol
The calculation is: Moles = Mass / Atomic Mass Moles = 0.085 / 17 Moles = 0.005 Atomic mass is 17 because ammonia is NH3, with N = 14, and H = 1. 14 + 1 + 1 + 1 = 17.
Atomic mass of Sulphur is 32 1 mole = Atomic mass of sulphur No. of moles = Given mass/ Atomic mass No.of moles= 5/32 0.15 moles
24.5 mL of a solution 1.0 M bromine contain 0,0245 moles.
number of moles = mass of the material/molar mass
A mole of HNO3 weighs 63g (1 + 14 +16x3). Therefore, two moles weigh, 2 x 63 =126 g
Since moles = mass/molar mass then the number of moles is 40.0/(1+1+16) = 2.22mol to 3sf
molar mass =207.2 g / mol no. moles = mass/ molar mass moles = 1 1(207.2) = mass mass of 1 mole lead is 207.2g molar mass =207.2 g / mol no. moles = mass/ molar mass moles = 1 1(207.2) = mass mass of 1 mole lead is 207.2g
mass of 6 moles of C = 12X6 =72g mass of 6 moles of Cl = 35.5X6 = 213g mass of 1 mole of C6Cl6 = 285g
moles of N2 = 1000/28= 35.7 moles moles of NH3 = 2 x 35.7= 71.4 moles mass of NH3 = 71.4 x 17 (14+1+1+1) = 1214g
mol = mass/Mr If the Mr and number of moles of a substance is known then the mass can be calculated. example:- if we have 1 mole of Na, how many grams do we have? mass = mol x Mr mass = 1 x 23 mass = 23g