Elements can combine to form molecules, like O2 or CO2. Elements combine to form molecules and these elements are joined together by

A.)chemical bonds

B.)nuclear energy

C.)sharing nuclei

D.)attractive forces

In this reaction n2o4(g)→2no2(g) what changes in color would you expect as pressure is increased at a constant temperature

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.