Questions from General Chemistry

Q: When yeast is added to a solution of glucose or fructose,

When yeast is added to a solution of glucose or fructose, the sugars are said to undergo fermentation, and ethyl alcohol is produced. C6H12O6(aq) 2C2H5OH(aq) + 2CO2(g) This is...

Q: Sulfurous acid is unstable in aqueous solution and gradually decomposes to water

Sulfurous acid is unstable in aqueous solution and gradually decomposes to water and sulfur dioxide gas (which explains the choking odor associated with sulfurous acid solutions). H2SO3(aq)...

Q: Small quantities of ammonia gas can be generated in the laboratory by

Small quantities of ammonia gas can be generated in the laboratory by heating an ammonium salt with a strong base. For example, ammonium chloride reacts with sodium hydroxide according to the followin...

Q: Elemental phosphorus burns in oxygen with an intensely hot flame, producing

Elemental phosphorus burns in oxygen with an intensely hot flame, producing a brilliant light and clouds of the oxide product. These properties of the combustion of phosphorus have led to its being us...

Q: For the balanced chemical equation for the combination reaction of hydrogen gas

For the balanced chemical equation for the combination reaction of hydrogen gas and oxygen gas 2H2(g) + O2(g) 2H2O(g) explain why we know that 2 g of H2 reacting with 1 g of O2 wil...

Q: represents the ability to do work or to produce heat.

represents the ability to do work or to produce heat.

Q: If common sugars are heated too strongly, they char as they

If common sugars are heated too strongly, they char as they decompose into carbon and water vapor. For example, if sucrose (table sugar) is heated, the reaction is C12H22O11(s) 12C...

Q: Thionyl chloride, SOCl2, is used as a very powerful drying

Thionyl chloride, SOCl2, is used as a very powerful drying agent in many synthetic chemistry experiments in which the presence of even small amounts of water would be detrimental. The unbalanced chemi...

Q: A is a device used to determine the heat associated with a

A is a device used to determine the heat associated with a chemical reaction.

Q: Calculate the number of moles of the indicated substance present in each

Calculate the number of moles of the indicated substance present in each of the following samples. a. 21.4 mg of nitrogen dioxide b. 1.56 g of copper(II) nitrate c. 2.47 g of carbon disulfide d. 5...