In the reaction H2CO3 (aq) + 2NH3 (aq) ? 2NH4 + (aq) + CO32 - (aq), which substance is reduced? A. H2CO3 B. NH3 C. NH4 D. CO3 E. None of the Above (This is not a redox reaction.)

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

3. A student was given an unknown metal. The student determined that the mass of the metal was 30.2 g. The student placed the metal in a graduated cylinder filled with 20,0 mL of water. The metal increased the volume of water to 22,0 ml.

What is happening in a double replacement reaction

What is the volume of 55 L of gas initially at 500 K and 4.25 atm when conditions change to STP? A. 10.5 L B. 428.1 L C. 584.0 L D. 127.6 L

What is the solubility of the diazonium salt

Which of the following is a possible definition of a base? A. A substance that increases the concentration of hydronium ions in a solution B. A compound that is a hydrogen ion acceptor in an acid-base reaction C.

Which of the following contains the smallest amount of matter

Which best describes the relationship between solute, solvent and solution? 1. A solution and solute combine to form a solvent 2. A solute is dissolved in a solvent to form a solution 3. A solvent is dissolved in a solute to form a solution 4.

A watermelon weighing 10 newtons is lifted 2 meters. How much work is done?

If an atom donates or accepts an electron, what is it considered