A potassium bromide solution is 7.55% potassium bromide by mass and its density is 1.03 g/ml. part a what mass of potassium bromide is contained in 35.8 ml of the solution?

2. Which change in oxidation number indicates oxidation? A) - 1 to + 2 C) - 1 to - 2 B) + 3 to + 2 D) + 2 to - 3

Suppose the following reaction system has reached equilibrium. Predict the effect if some O2 is removed from the system. 2SO2 (g) + O2 (g) - 2SO3 (g) Group of answer choices Equilibrium position shifts right, using up some O subscript 2.

In which chemical reaction will the heat content of the reactants be more than that of the products?

Calculate the mass in grams 5.0 moles of carbon

What are the molality and mole fraction of solute in a 22.3 percent by mass aqueous solution of formic acid (HCOOH) ?

What is the mass number of a carbon isotope that consists of 6 protons 6 electrons and 8 neutrons

Z=3 1s2 express answer as an ion

The Minoan civilization existed on the island of Crete, and it was influential in the Mediterranean during the 2000s BCE. In which way can the Phoenicians be described as successors to the Minoans? A. Phoenicia had a powerful, well-trained army. B.

In a distillation experiment, Provide reasons for any discrepancies between the initial volume of the liquid mixture (20ml) and the sum of the total final volume (18.4ml). Take into account water's property of solvent.

1. Bromine is a A. black solid B. red liquid C. colourless gas D. highly inflammable gas 2. The hardest substance available on earth is A. Gold B. Iron C. Diamond D. Platinum 3.