M Marie New member Oct 9, 2009 #1 Can some please tell me the method for calculating mass concentration so i can work out the answer to the question: - Find the mass concentration in g dm-3 for 0.042 moles of HNO3 dissolved in 250cm3 of a solution.
Can some please tell me the method for calculating mass concentration so i can work out the answer to the question: - Find the mass concentration in g dm-3 for 0.042 moles of HNO3 dissolved in 250cm3 of a solution.
M m_one New member Oct 9, 2009 #2 find the mass first mole x molar mass = 0.042 x (1 + 14 + 16(3) ) = 0.042 x 63 = 2.646 g the just divide with the volume in dm3 250cm3 = 0.25dm3 = 2.646 / 0.25 = 10.584 g/dm3
find the mass first mole x molar mass = 0.042 x (1 + 14 + 16(3) ) = 0.042 x 63 = 2.646 g the just divide with the volume in dm3 250cm3 = 0.25dm3 = 2.646 / 0.25 = 10.584 g/dm3
