What is the molality of a solution that contains 30g urea

Assignment Help Chemistry

Reference no: EM13385692

1. What is the molality of a solution that contains 3.0g urea (molecular weight = 60 amu) in 100g of benzene?

2. Calculate the freezing point of a solution containing 2.50g of benzene in 120g of chloroform?

3. A solution containing 2.00g of an unknown substance in 25.0g of naphthalene was found to freeze at 75.4 degrees C. What is the molar mass of the unknown substance?

4. How many grams of NaNO3 would you add to 250g of H2O in order to prepare a solution that is .500 molal in NaNO3?

Reference no: EM13385692

Questions Cloud

A laboratory animal exercised on a treadmill that was : a laboratory animal exercised on a treadmill that was connected to a weight with a mass of 256 g through a pulley. the

A student makes 215 ml of a 315m solution of na2so4 he then : a student makes 215 ml of a 3.15m solution of na2so4. he then forgets to seal it and some water evaporates overnight.

Starting with 310 moles of hbr in a 120 l reaction vessel : the equilibrium constant kc for the following reaction is 2.18 106 at 730degc.h2g br2g 2 hbrgstarting with 3.10 moles

The acidic constituent in vinegar is acetic acid a 100-ml : the acidic constituent in vinegar is acetic acid. a 10.0-ml sample of a certain vinegar contains 500. mg of acetic

What is the molality of a solution that contains 30g urea : 1. what is the molality of a solution that contains 3.0g urea molecular weight 60 amu in 100g of benzene?2. calculate

Would you be able to use fe3ions as an indicator for : when silver ions are added to the red fescn2 ions the red solution disappeared and a white precipitate of agscn formed.

What was the chemical reaction in the body and what : a 40 year old manager experiences abdominal pain post lunch. he goes to the restroom a couple of times but continues to

Carbonyl stretching frequency of aliphatic carboxylic : carbonyl stretching frequency of aliphatic carboxylic acids in dilute solution is located near 1770cm. this frequency

A 150 gram sample of solid leadii nitrate is added to 125 : a .150 gram sample of solid leadii nitrate is added to 125 ml of .100 m sodium ... .100 m sodium iodide solution.

User Account

All Pages