The nucleus of an atom is

A. negatively charged and has a high density

B. positively charged and has a high density

C. positively charged and has a low density

D. negatively charged and has a low density

A galvanic cell is made up of an aluminum electrode and a sodium electrode. Which metal is oxidized?

The rate law for a hypothetical reaction is rate = k [A][B]. If the concentrations of A and B are both 0.020 moles per liter and k = 1.3 * 10-1 M-1s-1, what is the reaction rate? a. 4.0 * 103 M b. 1.3 * 10-1 M-1s-1 c. 5.2 * 10-5 Ms-1 d. 5.

Many ionic and covalent compounds dissolve well in water. This is because A. the temperature of liquid water is high enough to allow anything to mix well with its fast moving particles. B.

If 5.738 grams of AgNO3 is mixed with 4.115 grams of BaCl2 and allowed to react according to the balanced equation: BaCl2 (aq) + 2 AgNO3 (aq) → 2 AgCl (s) + Ba (NO3) 2 (aq) What is the limiting reagent?

Which type of energy transformation is taking place when natural gas is used to heat water? A. chemical energy into thermal energy B. thermal energy into mechanical energy C. mechanical energy into electromagnetic energy D.

Which metal will spontaneously react with Zn2+ (aq), but will not spontaneously react with Mg2+ (aq) according to the activity series

How liquid in a thermometer changes so that it can be used to measure temperature

Why do some elements react easily but others dont?

1. What is an isomer? How many possible isomers of hexane are there? What are the structural differences between these isomers?

An ion of oxygen contains eight protons and has a charge of 2-. What must occur for this ion to become a neutral oxygen atom? Group of answer choices It must lose two electrons. It must gain two protons. It must gain two electrons.