What is the molar mass of potassium oxide, K2O?

A. 47.0 g

B. 110.0 g

C. 94.0 g

D. 55.0 g

Is cutting grass of physical change or chemical change

Question 4 if 0.587 g of nickel metal reacts with 1.065 g of chlorine gas, what is the empirical formula of the nickel chloride product? ni2cl3 ni3cl2 nicl3 nicl nicl2

Which of the following elements would be expected to resemble strontium (Sr) most closely in chemical properties? 1. Li 2. Ba 3. Sc 4. Cs 5. Si

A student states that 203.9 g of table sugar will form a saturated solution in 100 g of water. What do you need to know to decide whether this statement is correct?

Calcium carbonate was placed in a flask on a balance, and dilute hydrochloric acid was added. Carbon dioxide gas was produced and escaped from the flask. The total mass of the flask and its contents was recorded every 10 seconds.

What are the major function of the digestive system

What is a substance made of identical atoms called?

The hydroxide ion concentration in pure water at 25ºC is NOT equal to A. the hydronium ion concentration. B. 1 X 10^-7 M. C. the hydroxide concentration in a solution with a pH of 7. D. 1 X 10^7 M.

1. Why do rings stay shiny?

Which technology collects data for weather, climate, and environmental monitoring from space? radar satellites weather stations weather balloons