How many molecules are in 8.0g of ozone O3

how many moles of S2 are needed to produce .750 moles of SO2 gas?

A sample of Neon (Ne) gas is enclosed in a rigid 5.00 L container. At 300 K, the pressure on the walls of the container is 0.658 atm. 7a. How many moles of Ne are in the 7. container? 7b. How many Ne atoms are in the container? 8 7c. With the temperature held constant at 300 K, 0.267 mol of Ar (g) is injected into the rigid 5.00 L container with Ne (g) previously at 0.658 atm. What is the new total pressure and the partial pressures of Ne and Ar gases?

How many argon atoms are contained in 7.66 x 105 mmol of argon? 4.61 x 1026 Ar atoms 1.84 x 1028 Ar atoms 1.15 x 1028 Ar atoms 7.86 x 1020 Ar atoms O 3.24 x 1026 Ar atoms

The concentration of an old solution of hydrogen peroxide is being tested because hydrogen peroxide decomposes over time. The following reaction is catalyzed by potassium iodide and used to determine the concentration. If 3.0 ml of the peroxide solution is tested and produces 55 ml of O2(g) at 750 mm Hg and 23˚C, how many grams of hydrogen peroxide were in the solution? 2 H2O2(aq) à 2 H2O(l) + O2(g)

When 25.0 g of Zn reacts, how many L of H2 gas is formed at 25 °C and a pressure of 854 mmHg?

How many grams of CO2 are in 345.1 L of CO2 gas?