Questions from General Chemistry

Q: Over the years, the thermite reaction has been used for welding

Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid fuel rocket motors. The reaction is Fe2O3(s) + 2Al(s) / 2Fe(l) + Al2O3(s) a. W...

Q: Ammonia gas reacts with sodium metal to form sodium amide (NaNH2

Ammonia gas reacts with sodium metal to form sodium amide (NaNH2) and hydrogen gas. The unbalanced chemical equation for this reaction is as follows: NH3(g) + Na(s) NaNH2(s) +...

Q: Sulfur dioxide gas reacts with sodium hydroxide to form sodium sulfite and

Sulfur dioxide gas reacts with sodium hydroxide to form sodium sulfite and water. The unbalanced chemical equation for this reaction is as follows: SO2(g) + NaOH(s) Na2SO3(s) + H...

Q: What is meant by a state function? Give an example.

What is meant by a state function? Give an example.

Q: The production capacity for acrylonitrile (C3H3N) in the United States

The production capacity for acrylonitrile (C3H3N) in the United States is over 2 billion pounds per year. Acrylonitrile, the building block for polyacrylonitrile fibers and a variety of plastics, is p...

Q: How are the temperature of an object and the thermal energy of

How are the temperature of an object and the thermal energy of an object related?

Q: How is the calorie defined? How does a Calorie differ from

How is the calorie defined? How does a Calorie differ from a calorie? How is the joule related to the calorie?

Q: Convert the following numbers of calories or kilocalories into joules or kilojoules

Convert the following numbers of calories or kilocalories into joules or kilojoules. a. 7845 cal b. 4.55 * 104 cal c. 62.142 kcal d. 43,024 cal

Q: The “Chemistry in Focus” segment Nature Has Hot Plants discusses

The “Chemistry in Focus” segment Nature Has Hot Plants discusses thermogenic, or heat-producing, plants. For some plants, enough heat is generated to increase the temperature of the blossom by 15 °C....

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas

The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride is 2542 kJ for the equation as written: H2(g) + F2(g) 2HF(g) ∆H = -542 kJ a. Wh...