A certain liquid has a normal freezing point of and a freezing point depression constant . Calculate the freezing point of a solution made of of ammonium sulfate () dissolved in of .

Determine the reaction and balance the following equations urgent due in the morning

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)