N2 (g) + 3 H2 (g) → 2 NH3 (g) Assuming that a reaction vessel originally contains 0.200 moles of N2 and 0.600 moles of H2 , answer each of the following questions: a) How many moles of NH3 could be produced from these quantities of N2 and H2 ? NH3 mol b) After the reaction is complete, how many moles of N2 would remain? N2 mol c) After the reaction is complete, how many moles of H2 would remain? H2 moles

Chapter 9 Worksheet 9. A balloon can be stretched to a maximum radius of 10.5 cm. The balloon is filled with 3.0 L of helium gas at a pressure of 755 torr and a temperature of 298 K. The balloon is then allowed to rise. If the balloon bursts at an atmospheric pressure of 431 mmHg, what must the temperature have been at that point? The formula for the volume of a sphere is V = 4/3rtr. %3D 10. Mixtures of helium and oxygen are used in scuba diving tanks to help prevent "the bends". For a particular dive, 46.0 liters of helium and 12.0 liters of oxygen gas (at 25 °C and 1.0 atm) were pumped into a tank with a volume of 5.0 L (at 25 °C). a. How many moles of each gas are present inside the tank? b. What is the partial pressure of each gas inside the tank? the ha c. What is the total pressure inside the tank? 10 11. A molecule of a certain gas is composed of 30.4% nitrogen and 69.6% oxygen. A 50.42-g sample of the molecule is placed in a 15.0-L sealed container and heated to 100.0 °C,…

Write the pressure equilibrium constant expression for this reaction. 2 CH;OH()+3 O,(9)→2 CO,(g)+4H,0(g) OP

the equilibrium constant (K) is a quantitative measurement of the extent to which a chemical or physical reaction proceeds to completion.  If two reactants of known initial concentration are mixed and then the concentrations of the products are measured once equilibrium has been established, then the equilibrium constant can be calculated using an ICE table.  In this experiment you will measure the equilibrium constant for the formation of iron(III) thiocyanate from the iron(III) cation and thiocyanate anion:  Fe3+(aq) + SCN-(aq)  FeSCN2+(aq)  The product, FeSCN2+, is intensely red, which means that its concentration can be measured by using an ultraviolet-visible (UV-vis) spectrophotometer.  So long as a solution is not too concentrated, the absorption of light at a particular wavelength by a chemical species is described by Beer’s Law:  A = εℓ[X]          where  A = absorption of light (unitless number) ε = molar absorptivity constant (cm-1 M-1) ℓ = path length (cm) [X] =…

Use the formula of magnesium oxide (MgO) to write out a balanced chemical equation of the burning of magnesium metal in oxygen gas to generate magnesium oxide.  Make sure to indicate the physical state (s, l, g, or aq) for each of the substances in the equation.

Describe what happened to the overall level of carbon dioxide over this period of time.

the equilibrium constant (K) is a quantitative measurement of the extent to which a chemical or physical reaction proceeds to completion.  If two reactants of known initial concentration are mixed and then the concentrations of the products are measured once equilibrium has been established, then the equilibrium constant can be calculated using an ICE table.  In this experiment you will measure the equilibrium constant for the formation of iron(III) thiocyanate from the iron(III) cation and thiocyanate anion:  Fe3+(aq) + SCN-(aq)  FeSCN2+(aq)  The product, FeSCN2+, is intensely red, which means that its concentration can be measured by using an ultraviolet-visible (UV-vis) spectrophotometer.  So long as a solution is not too concentrated, the absorption of light at a particular wavelength by a chemical species is described by Beer’s Law:  A = εℓ[X]          where  A = absorption of light (unitless number) ε = molar absorptivity constant (cm-1 M-1) ℓ = path length (cm) [X] =…

At 25°C, the decomposition of dinitrogen tetraoxide N₂O4(8) 2NO2(g) has an equilibrium constant (K) of 0.144. If the equilibrium pressure of dinitrogen tetraoxide is 0.198 atm, what is the pressure of nitrogen dioxide?

The rare mineral nesquehonite contains MgCO3, together with hydration water (MgCO3.xH2O). A sample containing 21.7 g of nesquehonite is acidified and heated, and 3.51 L of CO2(g) at 0oC and 1 atm are produced. Assuming all the carbonate has reacted to form CO2(g), what is the chemical formula of nesquehonite? Write a chemical equation and the equilibrium constant (solubility product) expression for the dissolution of magnesite in water

Dinitrogen trioxide is an unstable compound that exists in equilibrium with nittrogen oxide and nitrogen dioxide. Calculate Kp for this reaction at 298.15K. Give delta G standard (kJ/mol) of N2O3 is 139.3, NO 86.6, NO2 is 51.3.