When the following equation is balanced, the coefficients are __________.
NH3 (g) + O2 (g) ? NO2 (g) + H2O (g)
When the following equation is balanced, the coefficient of Al is __________.
Al (s) + H2O (l) ? Al(OH)3 (s) + H2 (g)
When the following equation is balanced, the coefficient of C3H8O3 is .
C3H8O3 (g) + O2 (g) ? CO2 (g) + H2O (g)
Write the balanced equation for the reaction that occurs when methanol, is burned in air. What is the coefficient of methanol in the balanced equation?
What is the coefficient of O2 when the following equation is completed and balanced?
C4H8O2 + O2 ? __________
There are __________ sulfur atoms in 25 molecules of C4H4S2.
How many grams of hydrogen are in 46 g of CH4O?
There are __________ molecules of methane in 0.123 mol of methane (CH4).
A 2.25-g sample of magnesium nitrate, Mg(NO3)2, contains __________ mol of this compound.
What is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass?
A compound that is composed of carbon, hydrogen, and oxygen contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular weight of the compound is 136 amu. What is the molecular formula?
A compound is composed of only C, H, and O. The combustion of a 0.519-g sample of the compound yields 1.24 g of CO2 and 0.255 g of H2O. What is the empirical formula of the compound?
The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O:
4 NH3 (g) + 7 O2 (g) ? 4 NO2 (g) + 6 H2O (g)
The combustion of 28.8 g of ammonia consumes __________ g of oxygen.
Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia:
N2 (g) + 3H2 (g) ? 2NH3 (g)
A 7.1-g sample of N2 requires __________ g of H2 for complete reaction.
Silver nitrate and aluminum chloride react with each other by exchanging anions:
3AgNO3 (aq)+ AlCl3 (aq) ? Al(NO3)3 (aq) + 3AgCl (s)
What mass in grams of AgCl is produced when 4.22 g of AgNO3 react with 7.73 g of aluminum chloride?
What is the maximum amount in grams of SO3 that can be produced by the reaction of 1.0 g of S with of O2 via the equation below?
S (s) + O2 (g) ? SO3 (g) (not balanced)
Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide:
4Al (s) + 3O2 (g) ? 2Al2O3 (s)
In a particular experiment, the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of Al2O3. The % yield of the reaction is __________.
Sulfur and oxygen react in a combination reaction to produce sulfur trioxide, an environmental pollutant:
2S (s) + 3O2 (g) ? 2SO3 (g)
In a particular experiment, the reaction of 1.0 g S with 1.0 g O2 produced 0.80 g of SO3. The % yield in this experiment is __________.