Part A
Calculate the number of grams of solute in 0.290L of 0.205 M KBr.
m =
g
SubmitMy AnswersGive Up
Part B
Calculate the molar concentration of a solution containing 14.85g of Ca(NO3)2 in 1.365L .
M =
M
SubmitMy AnswersGive Up
Part C
Calculate the volume of 1.90 M Na3PO4 in milliliters that contains 4.00g of solute.
V =
mL

Question

Part A
Calculate the number of grams of solute in 0.290L of 0.205 M KBr.
  m = 	
	  g  
SubmitMy AnswersGive Up
Part B
Calculate the molar concentration of a solution containing 14.85g of Ca(NO3)2 in 1.365L .
  M = 	
	  M  
SubmitMy AnswersGive Up
Part C
Calculate the volume of 1.90 M Na3PO4 in milliliters that contains 4.00g of solute.
  V = 	
	  mL

anonymous · Answer

molarity=no. of moles of solute/volume in litres
here,molarity =0.205 M , volume=0.290L
NOW. NO. OF MOLES =MASS IN GRAMS/MOLECULAR MASS
                                 =W/M
WE HAVE TO CALCULATE MOLECULAR MASS OF KBR.
COULD U PLEASE TELL ME ATOMIC MASS OF POTASSIUM AND BROMINE?SO DAT I CAN CALCULATE THE MOLECULAR MASS