How many valence electrons are there in krypton? how many total electrons? explain how you know.

What is the formula for S5O3

What volume of so2 is produced at 325 k and 1.35 atm when 15.0 grams of hcl reacts with excess k2so3?

Plumbers, welders, or glass blowers often use the gas propane (C3H8) because it burns in oxygen with a very hot flame. The products of the combustion of propane are carbon dioxide and water vapor.

Valency of Chlorine is 1. Why?

Each sheet of metal on a roof is parallel to the rest of the sheets of metal. If the first sheet of metal is perpendicular to the top line of the roof, what can you conclude about the rest of sheets of metal? Justify your answer. a.

As a star increases in brightness, which of the following values becomes smaller? A. density B. magnitude C. temperature D. luminosity

If you are launching a matchstick rocket, the action force is the rocket pushing the gases down. what is the reaction force

Most of the daily radiation that you are exposed to originates from which of the following sources? rocks and soil X-rays nuclear power plants carbon-14

Oceanic crust is - made mostly of granite made mostly of limestone and salt thinner than continental crust thicker than continental crust

Calculate the molarity of a solution prepared by dissolving 1.00 g of ethanol, C2H5OH, in enough water to give a final volume of 101 mL