MgCl2 has a van't Hoff factor of 2. 70. What would be the boiling point (in 1 °C) of an aqueous solution containing 5. 70 mol of MgCl2 in 1. 00 kg of

water? (Kb for water is 0. 512 °C/m. The boiling point for water is

100. 0°C. )

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

The characteristics 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 an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

What is the work done by the electric force to move a 1 c charge from a to b?