Compared to the charges of a proton the charge of an electron has

1. a greater magnitude and the same sign

2. a greater magnitude and the opposite sign

3. the same magnitude and the same sign

4. the same magnitude and the opposite sign

What substances have an arrhenius base?

Do you think it is likely that a major volcanic eruption will occur on the mainland of the United States

Suppose that a student doing this experiment ran into some procedural and calculation difficulties. State the effect each of the following would have on the calculated value of R determined from this experiment. Briefly explain.

The electron affinity trend is:a. the same as the ionization energy trend and the atomic radius trendb. the same as the ionization energy trend but opposite the atomic radius trendc.

Na2SO4 (aq) + AgNO3 (aq) yields what when balanced?

The organisms living together in a community are interdependent upon one another. Look at the food web below. In which of the following ways is a puffin dependent upon salmon? A. Puffins have a commensalistic relationship with salmon. B.

2) Which of the following is a true statement? A: All the atoms of an element must be identical. B: Compounds may be separated by physical means. C: Mixtures may not be separated. D: Homogeneous is one type of compound.

How to tell the difference between ionic and covalent bonding?

The combustion of propane may be described by the chemical equation C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) C3H8 (g) + 5O2 (g) ⟶3CO2 (g) + 4H2O (g) How many grams of O2 (g) O2 (g) are needed to completely burn 83.3 g C3H8 (g) ?

Was the relationship among temperature, heat, and thermal energy?