How do chemists know that an oxygen molecule have unpaired electrons?

A conical flask has a volume of 71.9 mL. It is filled with water vapour at a pressure of 1053.8 kPa and a temperature of 738 K. Determine the mass of water in the conical flask. Select one: O a. 0.363 g O b. 0.183 g O c. 0.129 g O d. 0.222 g

Compare solids, liquids, and gases in terms of their shapes and volumes.

Salt crystals look like tiny cubes. Salt is part of the ___ crystal system. a. hexagonal b. isometric c. monoclinic d. triclinic

Which items are needed for a plant to become fertilized?

Consider an ideal gas with N = 1023 particles and an internal energy of U = 100 J. If the gas triples in volume, but its entropy remains constant, what is the internal energy after it expands? Hint: write the new energy as aU, and solve for a.

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c

How is wind deflation different from wind abrasion?

What is the pH of a solution with a hydronium concentration of 2.88 * 10-2 M?

Which of the following characteristics is fixed, or definite, for all states of matter? volume shape mass energy

Describe a change caused by kinetic energy as well as a change caused by potential energy.