Molality questions....Chemistry Help!!!?

T

Tyler

New member
A solution made from ethanol (C2H5OH) and water is 1.04 molality. How much C2H5OH is contained per 250 g of water?
Answer in units of g.


What is the molality of a solution containing 17.5 g HCl and 200 g of H2O?
Answer in units of molality

How much H2O must be added to 83.5 g of Ca(NO3)2 to form a 0.400 molality solution?
Answer in units of kg.

How many grams of methanol (CH3OH) is require to prepare a 0.236 molality solution in 306 g of water?
Answer in units of g.

How much AgNO3 is needed to prepare a 0.148 molality solution in 258 mL of water?
Answer in units of g.

Please explain...I don't understand molality at all!!

Thanks!!!!!
 
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