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The volume of a sample of Cl2 is 5.62 L at 740 torr and 33 degrees celsius. What volume will the Cl2 occupy at 107 degrees celsius and 680 torr.
The percent by mass of bicarbonate in a certain alka seltzer product is 32.5%. calculate the volume of c02 generated at 37C and i atm when a person ingest 3.29 g tablet.
How many liters of gas would be formed at 510 degrees C and 1.00 atm pressure by explosion of 405g of NH4NO3 ? Given the formula: 2NH4NO3(s)--> 2N2(g) + 4H20(g) + O2(g)
The concentration of Mg2+ in a sample of water is 262 mmol/L At what pH will 99% of the Mg2+ be precipitated as Mg(OH)2? Ksp = 8.9 x 10-12
How many grams of barium ion are in a 487-mg sample of the barium compound if a solution of the sample gave 499 mg BaSO4 precipitate? What is the mass percentage of barium in the compound?
How many grams of CH4 must be burned to release 490 kJ of heat based on this thermochemical equation:CH4 + 2 O2 --> CO2 + 2 H2O Delta H rxn = -802.3 kJ.
If 69.5 kJ of heat is applied to a 1040. g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
How many molecules of carbon dioxide are produced when 134 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
An 85.0g sample of iron requires 954 J of heat to raise its temperature 25.0C. What is the specific heat of the iron?
Calculate the theoretical mass of Ca^2+ ion in one tablet in grams if there is 750 mg CaCO3 and 320mg Calcium per tablet. The tablet weight 1.801 grams.
A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the gold oxide?
If 1 gallon of paint can cover a square room and ceiling with walls that are 9.36 feet high and 9.36 long, what is the thickness of the paint (in micrometers)?
Using the periodic table, predict thr most stable ion for Na, Mg, Al, S, Cl, K, Ca, and Ga. Arrange these ions from largest to smallest radius and explain.
Find the percentage composition of a compound that contains 1.94 g of carbon, 0.48 g of hydrogen, and 2.58 g of sulfur in a 5.00 g sample of the compound?
Methane changes from a gas to a liquid at -161 degrees Celsius. Water can become a gas at 100 degrees Celsius. What could account for the difference?
The heat of combustion for this reaction = 2044 kJ heat released per mole of propane burned. How many grams of oxygen would be required in the combustion of propane to produce 582 kJ of heat?
find the rate of formation of the ammonium ion the instant 100 cm3 of 0.15 M ammonia is mixed with 100 cm3 of 0.10 M nitric acid.
A solution is prepared by adding 30.0ml of 0.060M HBr to 130.0ml of 0.40M HI. Calculate the concentrations of all species in this solution HBr and HI are both considered strong acids.
Carbon dioxide is a green house gas that is linked to global warming. It is released into the atmosphere through the combustion of octane (C8H18) in gasoline. Write the balanced chemical equation fo
a 43 L tank contains a gas under a pressure of 369 atm. What volume would the gas occupy at the same temperature at 710 torr of pressure?
The mass of the silver halides obtained was 0.9987 g. What is the molarity of HBr in the original solution and what is the molarity of HCl in the original solution?
Solid lithium hydroxide reacts with gaseous carbon dioxide to form solid lithium carbonate and liquid water. What mass of carbon dioxide can be removed from the air by using 325 g of lithium hydrox
A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solut
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
Calculate the freezing point and boiling point of an aqueous solution that is .040 molality in Na3PO4. Assume that the salt is totally dissociated.