A washing powder contains sodium hydrogencarbonate

What information does the complete ionic equation give? O A. It shows what compounds will react to form a precipitate. B. It shows what compounds dissolved to form the ions. O C. It shows how the compounds actually exist in solution. O D.

A mercury discharge tube produces numerous strong spectral bands. The spectrum of the mercury-filled fluorescent lights in the lab shows three strong bands (one red, one green, and one blue). Why?

State the general trends found in group 0.

A 1.0 mol sample of X (g) and a 1.0 mol sample of Q (g) are introduced into an evacuated, rigid 10.0 L container and allowed to reach equilibrium at 50oC according to the equation above.

What was a significant shortcoming of Rutherford's model of the atom? A. It could not explain the chemical properties of elements. B. It applied only to gold, not other elements. C. It was based on faulty evidence. D.

The volume, in liters, of 538 g of CO2

What are two types of cold air masses that influence the weather in North America? Name them and describe their humidity.

Initial Volume (VI) Final Volume (Vf) = Object's volume =

Which statements are true about the linear inequality y > x - 2? Check all that apply

How is the Gobi Desert different from the Sahara Desert