A buffer solution is made by mixing 0.10 mol acetic acid and 0.10 mol sodium acetate in 1.0 L solution. If Ka = 1.8×10⁻5, what is the pH of the buffer?

When 4.0 grams of hydrogen gas react completely with oxygen gas, how many grams of water are produced? (Reaction: 2H₂ + O₂ → 2H₂O)

Ideal gas law is:

Calculate the Output Voltage for the Given Circuit: Assume Input Voltage one is 6 V and Input Voltage two is 4 V.

If the rate law for a reaction is Rate = k[A]²[B], what happens to the rate if [A] is doubled and [B] is halved?

Kinetic molecular theory states that gas particles:

 Significant figures are important because:

Endothermic reactions:

Calculate the Output Voltage for the Given Circuit: Consider the input voltage as 4V.

If 2.0 g of magnesium reacts with excess oxygen, how many grams of magnesium oxide are formed? (Reaction: 2Mg + O₂ → 2MgO, molar mass Mg = 24 g/mol, MgO = 40 g/mol)