Questions from General Chemistry

Q: One step in the commercial production of sulfuric acid, H2SO4,

One step in the commercial production of sulfuric acid, H2SO4, involves the conversion of sulfur dioxide, SO2, into sulfur trioxide, SO3. 2SO2(g) + O2(g) / 2SO3(g) If 150 kg of SO2 reacts completely,...

Q: Many metals occur naturally as sulfide compounds; examples include ZnS and

Many metals occur naturally as sulfide compounds; examples include ZnS and CoS. Air pollution often accompanies the processing of these ores, because toxic sulfur dioxide is released as the ore is con...

Q: For each of the following unbalanced equations, indicate how many moles

For each of the following unbalanced equations, indicate how many moles of the first product are produced if 0.625 mole of the second product forms. State clearly the mole ratio used for each conversi...

Q: When elemental copper is placed in a solution of silver nitrate,

When elemental copper is placed in a solution of silver nitrate, the following oxidation–reduction reaction takes place, forming elemental silver: Cu(s) + 2AgNO3(aq) / Cu(NO3)2(aq) + 2Ag(s) What mass...

Q: When small quantities of elemental hydrogen gas are needed for laboratory work

When small quantities of elemental hydrogen gas are needed for laboratory work, the hydrogen is often generated by chemical reaction of a metal with acid. For example, zinc reacts with hydrochloric ac...

Q: The gaseous hydrocarbon acetylene, C2H2, is used in welders’ torches

The gaseous hydrocarbon acetylene, C2H2, is used in welders’ torches because of the large amount of heat released when acetylene burns with oxygen. 2C2H2(g) + 5O2(g) / 4CO2(g) + 2H2O(g) How many gram...

Q: For each of the following unbalanced chemical equations, suppose exactly 5

For each of the following unbalanced chemical equations, suppose exactly 5.0 g of each reactant is taken. Determine which reactant is limiting, and calculate what mass of each product is expected, ass...

Q: For each of the following unbalanced chemical equations, suppose 25.

For each of the following unbalanced chemical equations, suppose 25.0 g of each reactant is taken. Show by calculation which reactant is limiting. Calculate the theoretical yield in grams of the produ...

Q: Hydrazine, N2H4, emits a large quantity of energy when it

Hydrazine, N2H4, emits a large quantity of energy when it reacts with oxygen, which has led to hydrazine’s use as a fuel for rockets: N2H4(l) + O2(g) / N2(g) + 2H2O(g) How many moles of each of the g...

Q: Consider the following reaction: 4NH3(g) + 5O2

Consider the following reaction: 4NH3(g) + 5O2(g) ( 4NO(g) + 6H2O(g) a. If a container were to have only 10 molecules of O2(g) and 10 molecules of NH3(g), how many total molecules (reactant and produ...