Hydrogen gas can be produced by the following equation: Sodium + hydrochloric acid → sodium chloride + hydrogen.

If hydrogen atoms cannot be created, what is the source of the atoms in the hydrogen gas in this reaction?

A. Sodium

B. Both sodium and hydrochloric acid

C. Hydrochloric acid

D. Neither sodium nor hydrochloric acid

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

Which of the following statements about acidic water is true? a. acid has no effect on the h, o molecules. b. the solution contains a larger number of oh ions than h, o ions. c. the solution contains a larger number of h, o ions than qh ions. d. the solution contains an equal number of h, o ions and oh ions. none of the above e.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange