NH3 is an example of

O A.

a compound.

B.

an element.

C. an atom.

a mixture.

Has colored salts that will produce colored aqueous solutions a. F b. Li c. Fe d. He e. Si

Estimate the pH of the resulting solution if you mixed equal amounts of hydrochloric acid (HCI) and sodium hydroxide (NaOH).

15 Ethanoic acid reacts slowly with calcium carbonate. Which statements explain why an increase in temperature increases the rate oft 1 The activation energy of the reaction is decreased. 2 There is an increase in collision rate.

How many molecules are contained in 0.500 moles of hydrogen gas? A. 1.20 x 1024 molecules B. 6.02 x 10-23 molecules C. 3.01 x 10-23 molecules D. 3.01 x 1023 molecules

Round each figure to three significant figures

Secondary consumers are eaten by?

What happens to atomic radius down a group?

The study of aquatic plants Oceanography or Biology?

A cube of an unknown metal is 1.25 inches on each side and has a mass of 128.3741 g. What is its' density?

Water is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. Describe what happens on the molecular level as the water dissolves in the isopropanol.