A 0.05m solution of potassium iodide is needed to lower the freezing point of a sample of pure water. How many grams of KI must be dissolved in 500 grams water to produce a .050 mole solution of KI?[ water density is 1g/1ml] A) 4 grams
B) 4.15 grams
C) 8.3 grams
D) 25 grams

What is the mass of 4 molecules of co2

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted