Explain how many moles of oxygen are generated

Reference no: EM13519201

1. How many moles of oxygen are generated during the thermal decomposition of 7.75 g of lead (IV) oxide?

2. 2. A sample of sodium metal having a mass of 5.45 g reacts with excess water, and the water is later evaporated. What is the solid product that remains after evaporation, and how many grams of this product are expected to be formed?

3. In the reaction described in the previous questions, a gas is produced. At 25°C and 1.00 atm of pressure, how many liters of this gas was produced from 3.45 g of sodium metal?

4. A sample of magnesium sulfate heptahydrate having a mass of 7.35 g. is dried completely. How many grams of dry product are expected to be found?

5. An unknown amount of magnesium metal reacts with 100.0 mL 0f 0.100M aqueous hydrochloric acid. The final solution is acidic, and titrated to an endpoint using 0.150 M aqueous sodium hydroxide. The endpoint was neutralized after the addition of 16.45 mL of base. How many grams of magnesium metal were produced?

6. In the previous problem, a gas was produced during the reaction of mixing magnesium metal with aqueous hydrochloric acid. From the data of Problem 5, how many grams of this gas were produced?

7. Calculate the molarity of a 0.262 N aqueous solution of nitrous acid.

Reference no: EM13519201

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