Which of the following would have the largest amount of mass? a. 1 nanogram (ng) b. 1 kilogram (kg) c. 1 milligram (mg) d. 1 centigram (cg)

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles