# General Chemistry (College LvL)

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When a 4.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 2.908 kJ x K^-1, the temperature decreases by .230 K. Calculate the molar heat of KBR

• General Chemistry (College LvL) -

moles KBr = 4.00/molar mass = ??
2.908 kJ/K x 0.230 K = ?kJ.
Then molar heat of KBr = ?kJ/?mole.

• General Chemistry (College LvL) -

The grams of protein in 1 cup of soup that has 110 {\rm Cal} with 7 {\rm g} of fat and 9 {\rm g} of carbohydrate.

• General Chemistry (College LvL) -

If a 2.90g sample of a non-electrolyte dissolved in 100g of H2O gives a solution that freezes at -0.62 degress Celicus. what is the molecular weight of the compound?

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