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When nitrogen gas reacts with hydrogen gas, ammonia gas is formed. How many grams of hydrogen gas are required to react completely with 3.5 L of nitrogen at STP?
The concentration of a sodium hydroxide solution is determined by titrating it against a sample of potassium hydrogen phthalate (KHP). KHP is a weak acid with one hydrogen and a molar mass of 204.22 g
What maximum mass of sulfur, in kilograms, could be produced by the reaction of 1.3 × 104 m3 of SO2(g) with 2.5 × 104 m3 of H2S(g), both at STP?
Hydrochloric acid reacts with magnesium to produce hydrogen gas and magnesium chloride. Reacting magnesium with excess hydrochloric acid produces 1204 mL of hydrogen gas that is collected over water.
Calculate the work done when 65.0 g of tin dissolves in excess acid at 1.00 bar and 23°C. Assume ideal gas behavior. Sn(s) + 2 H+(aq) → Sn2+(aq) + H2(g).
A Cu/Cu2+ concentration cell has a voltage of 0.24 V at 25M . The concentration of Cu^2+ in one of the half-cells is 1.5×10-3 . What is the concentration of Cu2+ in the other half-cell?
Ethanol (C2H5OH) boils at 78 C. Its density is 0.789 g/mL. The enthalpy of vaporization is 38.56 kJ/mol . The specific heat of liquid ethanol is 2.3 J/g-K.
What is the mass percent of H2O2 in the sample if43.2ml of a0.105M KMnO4 soln is needed for the titration of the sample? What is the reducing agent in the redox reaction?
A 2.12 g sample of KClO3 (s) was heated to produce KCl (s) and O2 (g). The sample of oxygen was collected over water. The pressure of the atmospheric pressure was 754 torr and a temperature of 22C.&nb
What is the concentration of Ni(II) in micromolar units. How many milligrams of NiCl2*6H20 are combined in the 50 ml. volume.
The tosylate of (2S,3R)-4-methyl-3-phenylpentan-2-ol undergoes an E2 elimination on treatment with sodium ethoxide. Draw the structure of the alkene that is produced.
How many grams of sodium formate, NaCHO2, must be added to 750.0mL of .250 M of formic acid, HCHO2, to obtain a buffer with pH of 5.5
This gas at a total pressure of 34 is shaken with water at 30. Calculate the molar concentration of radon in the water.
The gas with an initial volume of 24.0 L at a pressure of 565 mmHg is compressed until the volume is 16.0 L. What is the final pressure of the gas, assuming the temperature does not change?
If the pressure and temperature are such that Vm = 10b, what is the numerical value of the compression factor?
A gaseous sample of a compound has a gas density of 0.977 g/L at 710.0 torr and 100.0 C. What is the molar mass the compound? If this compound contains only nitrogen and hydrogen, and is 87.4% nitr
Calculate script e° values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the reactions. Standard reduction potentials are found in the ta
What are some and/or similarities in the type of inhibition caused by heat, acid, or base, and heavy metal ions on enzyme activity?
A substance containing 28.84% Nitrogen, 0.0648g Hydrogen, and Oxygen and Carbon, with (total) mass (of the substance) 1.2953. Find the emperical formula of the compound.
What is the role of NH4Cl in reduction of camphor with NaBH4
An automobile gasoline tank holds 27kg of gasoline, when the gasoline burns, 85kg of oxygen is consumed, and carbon dioxide and water is produced.
A 45-year-old woman is receiving a 'combined modality' treatment for the initial stage of breast cancer. State the two aspects included in this treatment. State the methods by which a radiation oncolo
Sketch the phase diagram for CO2 using the following data: triple point, 216.8K and 5.11atm; critical point, 304.2K and 72.9 atm; normal sublimation point, 194.7K.
Assuming ideality of the solution and the vapour, calculate the ratio of the vapour pressure of pure A to that of pure B.
What is Ka for this acid?When 0.050 mol of propionic acid, C2H5CO2H, is dissolved in 300 ml of water, the equilibrium concentration of H3O+ ions is measured to be 1.37 x 10-3 M. What is Ka for this ac