A mixture of H2 and water vapor is present in a closed vessel at 20°C. The total pressure of the system is
755.0 mmHg
Partial pressure of water vapor at 20°C equals 17.5 mmHg.
What is the partial pressure of H2?

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous