Which balanced equation represents a phase equilibrium?

(1) H2 (g) + I2 (g) 2HI (g)

(2) 2NO2 (g) N2O4 (g)

(3) Cl2 (g) Cl2 (l)

(4) 3O2 (g) 2O3 (g)

How do I classify elements the way that the periodic table was classified?

How many grams of water do you have to decompose if you want to prepare 34.7 g of oxygen?

An electromagnets different from a permanent magnets because an electromagnet blank whats the blank?

Chromium-52 is the most abundant isotope of chromium. How many neutrons does one atom of this isotope have?

The concentration of ionic substances is important for the heart to beat. Your heart responds to electrical impulses that travel through heart cells that are made up mostly of water.

Which process is used to determine the concentration of an acid?

Using the ideal gas equation, calculate the pressure of oxygen gas in a cylinder with a volume of 25.00 L. The oxygen masses 4.362 kg and room temperature is at 22.5 o C.

Which of the following methods separates a homogeneous solution by spinning the solution very fast? Evaporation and distillation Filtration Centrifuge Magnetism

If the reaction is at dynamic equilibrium at 500 K, which statement applies to the given chemical system? The forward and reverse reactions no longer occur. The rates of the forward and reverse reactions are unequal.

The first element on the periodic table of elements is hydrogen true or false