A sample of oxygen is collected over water at a total pressure of 690.7 mmHg at 19°C. If the vapor pressure of water at 19°C is 16.5 mmHg, then what is the partial pressure of the O2 in the sample in units of atmospheres?

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.