What is the universe made of?

A charged atom is called an

The equilibrium system N2O4 (g) 2NO2 (g) was established in a 1.00-liter vessel. Upon analysis, the following information was found: [NO2] = 0.500 M; [N2O4] = 0.0250 M. What is the value of Keq? a. 20. b. 0.050 c. 10.0 d. 0.10

Which element will have the following property in the periodic table 1) Largest atomic size 2) Highest electron affinity 3) lowest ionisation enthalpy in group II 4) gaseous form at room temperature

A gas sample of Xe occupies 10-liter balloon at 27 degrees C under a pressure of 1.2 atm. Approximately what volume would the gas occupy at 350 K and 2 atm of pressure? A. 7 liters B. 9 liters C. 13 liters D. 18 liters

It is winter where jenna lives. Its been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes?

What does the orbital tell you about the location of the electron?

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g Hl into mol using molar mass)

Which of the following describes a reaction that reaches equilibrium?

What happens to water during evaporation? A) It turns gas as it cools. B) It turns to liquid as it cools. C) It turns to solid as temperature decreases. Eliminate D) It turns to gas as the temperature increases.

A gas can holds 2.9 gal of gasoline. what is the quantity in cubic centimeters