Other Chemistry Answers

2. Phosphorus (V) oxide P4O10 is used to prepare phosphoric acid.

a) Write the reaction equation when solid phosphorus (V) oxide is prepared by burning solid phosphorus P4.

b) How much phosphorus (V) oxide can be produced when 1.33 g of phosphorus and 5.07 g of oxygen are available?

3.
Butane with an evaporation temperature of 0°C is used as liquefied gas in camping stoves. Butane is also a great power for summer hikers in Finland as a gas for a camping stove. One summer day the temperature was + 15°C and the air pressure 0.95 bar. Calculate how many liters of carbon dioxide was formed when a hiker boiled a 450-gram bottle of butane gas. Suppose the combustion was complete and that the hiker managed to cook the bottle empty (in fact, the same pressure remained inside the bottle as it was outside the bottle).

Determine the volume of SO2 (at STP) formed from the reaction of 96.7 g of FeS2 and 55.0 L of O2 (at 398 K and 1.20 bar). The molar mass of FeS2 is 119.99 g mol-1.

4FeS2(s) + 11O2(g) → 2Fe2O3(s) + 8SO2(g)

find the mass in grams of 1.00 x 10 23 molecules of N2

A solution of NaOH has a concentration of 7.5g/DM3.whatis the mass of NaOH contained in 500cm3?

PCl3 + Cl2 ⇌ PCl5, calculate all three equilibrium concentrations when Kc = 16.0 and [PCl5] i = 1.00 M.

the temperature of 17g of water can be raised by 2.0c with __ or ___ of thermal energy

When 1.50 mol of CO2 and 1.50 mol H2 are placed in a 0.750-L container at 395ºC, the following

equilibrium is achieved: CO2(g) + H2(g) ↔ CO(g) + H2O(g).

If Kc = 0.802, what are the concentrations of each substance in the equilibrium mixture?

USE 3 SIG FIGS for each answer?

CO2 & H2 =

CO & H2O =

At 500K the reaction PCl5(g) ↔ PCl3(g) + Cl2(g) has a Kp = 0.497. In an equilibrium mixture at 500K,

the partial pressure of PCl5 is 0.860 atm and PCl3 is 0.350 atm.

What is the partial pressure of Cl2 in the equilibrium mixture?

At 1000K the value of Kp = .338 for the reaction 2SO3(g) ↔ 2SO2(g) + O2(g).

Calculate the value for Qp and predict the direction in which the reaction will proceed toward equilibrium if the initial pressures are PSO3 = 0.16 atm; PSO2 = 0.41 atm; PO2 = 2.5 atm.

Qp =

Direction? write either left or right =