Gas Stoichiometry
BrainMass Solutions Available for Instant Download
Pressure and Volume Change of a Gas
I need some help in answering a question regarding caculations of how a compressed gas becomes a liquid: 10,000 m3 of natural gas as methane is the starting point at 288 Kelvin We are told that 2 things happen to the gas: 1) The 10000 m3 gas volume is compressed from 101 KPa to 6895 KPa I know this is PV =nRT but how
Lab : Gases, Pressure and Stoichiometry
Add 0.5g of sodium bicarbonate, NaHCO3 into a flask. Record the initial pressure and temperature in the flask. Add 10 mL of water to the flask to dissolve the NaHCO3 then record the pressure as the initial pressure for the experiment. Record the gas volume as the initial volume. Add 1 mL of 1M HCl, allow the temperature in the
Density, Molar Mass and Stoichiometry
1) Calculate the density of NO2 gas at 0.970 atm and 33C degree. 2) Calculate the molar mass of a gas if 2.50g occupies 0.885L at 685 torr and 33C degree. 3) Calcium hydride,CaH2 , reacts with water to form hydrogen gas: CaH2(s)+2H2O(l)>>Ca(OH)2(aq)+2H2(g) This reaction is sometimes used to inflate life rafts, weath
Gas Laws and Stoichiometry
1. A gas occupying a volume of 725mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final the volume? 2. The volume of a gas is 5.80L, measured at 1.00 atm. What is the pressure of the as in mmHG if the volume is changed to 9.65 L? (The temperature r
Gas Laws, Stoichiometry and Enthalpy
Question 1 A sample of a gas occupies 1.40 x 103 mL at 25oC and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg? 2,800 mL 2,100 mL 1,400 mL 1,050 mL 700 mL -------------------------------------------------------------------------------- Question 2 The gas pressure in an aerosol can
One Mole of any gas occupies 22.4 L at STP
Consider the following reaction, which takes place in an autoclave at 250C and 800 atm. 4NH3(g) + 7O2(g) = 4 NO2(g) + 6H2O(g) Into the reaction vessel has been placed 200L of NH3(g) and 120L of O2(g). The reaction is allowed to go to completion. Determine the quantity, in moles, of the gas that remains unreacted
Commercial Air Bags
Commercial automobile air bags use a spark to initiate the decomposition of solid sodium azide. NaN3 to nitrogen gas. How many grams of NaN3 must react to make 75.0 L of N2 at 1.oo atm? A. 14.6 g NaN3 B. 129 g NaN3 C. 1.14 x 10 TO THE POWER OF 3 g NaN3 D. 193 g NaN3 E. 145 g NaN3
Atmosphere, Atomic weight, and Mass
3. a.) The initial reaction when an automobile airbag deploys is: 2NaN3(s) → 2Na(s) + 3N2(g). If 125.0g of NaN3 reacts, how many liters of N2 gas result at 25.0oC and a pressure of 1.00 atmosphere? 3. b.) The recent death of a former soviet spy is attributed to the effects of an isotope of Polonium with an atomic
applications of gas law
See attached file for full problem description. 1. Gaseous CH4 reacts with O2 according to the following UNBALANCED equation: CH4 + O2 -->  CO2 + H2O What volume of oxygen at 20ºC and 97kPa is needed to react with 3.50 mol of CH4? 2. What volume of CO2 measured at 25ºC and 0.95atm is produced by the combusti
Environmental chemistry question - short
Assume that waste will contain 295.0 mg/L of biodegradable CH2O and will be processed through a 200000.0 L/day sewage treatment plant which converts 40% of the waste to CO2 and H2O. Calculate the volume (in Liters) of air (at 25 degrees C, 1 atm) required for this conversion. Assume that the O2 is transferred to the water with 2
What is the maximum volume @STP of the butene mixture that could be obtained by dehydration of .081g of 2-butanol?
What is the maximum volume @STP of the butene mixture that could be obtained by dehydration of .081g of 2-butanol?
What volume of Cl2(g) at STP would you need to obtain a 250g sample of Cl2
1. What volume of Cl2(g) at STP would you need to obtain a 250g sample of Cl2(g)? 2. A .418g sample of gas has a volume of 115mL at 66.3 degrees Celsius and 743mmHg. What is the molar mass of this gas? 3. What is the volume, in liters, occupied by a mixture of 15.2g Ne(g) and 34.8g Ar(g) at 7.15 atm pressure and 26.7 degre
Problem involving Stoichiometry and the Ideal Gas Law
From the data given in the attachment, determine the following: moles of H2(g) produced, moles of HCl(aq) reacted, the balanced chemical reaction, and the value of "y" in Mcl_y(a) See attached file for data.
Niobium Converted to Niobium Hydride
In one experiment, 0.780 g Nb (s) was sealed in a 28.0 mL glass tube at 25°C under 6.33 atm of hydrogen gas, H2. After reacting with the hydrogen for one week, all of the niobium had been converted to niobium hydride, NbH. Calculate the final pressure of hydrogen gas in the system at 25°C.
Gas stoichiometry
Calculate the mass in grams of Hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.
Stoichiometry: What volume of hydrogen gas in liters was collected at STP?
The purity of a 0.248 gram sample containing Zn is determined by measuring the amount of hydrogen gas formed when the sample reacts with hydrochloric acid. The sample is found to be 91.7% Zn. What volume of hydrogen gas in liters was collected at STP?