How many grams of nacl do you need to prepare 200 ml of a 5m solution? the molecular weight of nacl is 58.4 g/mol. smol 0.2l-1mol nacl lib imol naclx 8.glol nacl mol 58.19 nac

58.4 grams of NaCl is needed to prepare 200 ml of a 5M solution.

HOW TO CALCULATE MASS:

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The answer to your question is: 58.4 g of NaCl

Explanation:

Data

Volume = 200 ml = 0.2 l

Concentration = 5M

MW = 58.4 g

mass NaCl = ?

Formula

             Molarity = (# of moles ) / volume

             # of moles = Molarity x volume

             # of moles = 5 x 0.2

             # of moles = 1

              58.4 g 1 mol

              x            1 mol

              x = (1 x 58.4) / 1

             x = 58.4 g of NaCl

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"