Which compounds yield hydrogen ions as the only positive ions in an aqueous solution?

(1) H2CO3 and HC2H3O2

(2) H2CO3 and NaHCO3

(3) NH3 and HC2H3O2

(4) NH3 and NaHCO3

Consider three identical flasks filled with different gases. Flask A: CO at 760 torr and 08C Flask B: N2 at 250 torr and 08C Flask C: H2 at 100 torr and 08C a. In which flask will the molecules have the greatest average kinetic energy? b.

How many N2 molecules would exist in 500g of water at 20C?

For molecules of comparable mass, why are dipole-dipole forces stronger than dispersion forces?

Which of the following is smaller than the atomic radius of beryllium? a. the ionic radius of beryllium b. the atomic radius of lithium c. the ionic radius of carbon d. the atomic radius of magnesium

Which of the following types of models is usually in the form of a drawing graph or equation

Describe the difference between a monoprotic acid and a triprotic acid. How does a triprotic acid generate hydrogen ions?

Which of the following do scientists use to form a hypothesis?.

How many moles of carbon are in 7.87x10^7 carbon molecules?

The phases of the moon are caused by the changing positions of the Earth and the Moon in relation to the Sun. Which items could best be used to represent the Sun, the Earth, and the Moon in a model that shows the phases of the Moon? A.

Describe your observations of the original solutions. Describe your observations when the silver nitrate was added to the sodium chloride solution.