A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa, and partial pressures of argon and helium of 152 kPa and 305 kPa, respectively. What is the partial pressure of oxygen in this mixture?

In the electron configuration [ar]4s23d104p4, which are valence electrons?

The element with 8 electrons in its 3d sublevel is a. O. b. Ne. c. Ar. d. Ni.

Which of these best arranges the planets in the solar system in the increasing order of their period of rotation? Select one: a. Jupiter → Uranus → Mars → Mercury b. Mars → Venus → Earth → Mercury c. Neptune → Saturn → Jupiter → Uranus d.

Why does the temperature of the water stay the same when it melts and boils?

B2O3 (s) + 3C (s) + 3Cl2 (g) - - - > 2 BCl3 (g) + 3CO (g) What is the mass of carbon required in order to produce 6.00 mol BCl3? A. 234 g B. 216 g C. 108 g D. 0.375 g

When balancing an equation, should you adjust the subscripts or the coefficients?

How does the sun warm the earth

What controls the amount of light that enters the eye?

The universe contains billions of galaxies, each containing billions of stars. True or false

How is measuring the volume of liquids different than measuring the volume of regular-shaped solids?