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How many grams of ice at 0°C and 101.3kPa could be melted by the addition of 0.40kJ of heat? Find the molar heat of fusion.
If the methane contained in 5.00L of a saturated solution at 25 ^circ rm C was extracted and placed under STP conditions, what volume would it occupy.
A bottle contains 175 m: of insulin at a concentration of 20.0 mg/ml . What is the total mass of insulin in the bottle?
Draw Line structures of each compound a.Benzyl alcohol, benzaldehyde, benzyl acetate b.Aniline,N,N-dimethylaniline, naphthalene c.Benzophenone, Biphenyl, Benzoic acid.
Compute the volume of CO 2 and water vapour produced and the volume of oxygen remaining, when 20.0 dm 3 of propane reacts with 120.0 dm 3 of oxygen. All gas volumes are measured at the same temperature and pressure.
if 0.55 g of a gas dissolves in 1.0 l of water at 20.0 kPa of pressure, how much will dissolve at 110.0 kPa of pressure?
if 1.205 g of KHP required 25.25 mL of NaOH solution for complete neutralization, what is the molarity of the NaOH sodium hydroxide solution?
What is the most appropriate temperature for storing your protein between purification steps? a) Room temperature b) 4° C c) -20° C d) -80° C
125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
A sample of an ore of iron, hematite, is 56% Fe2O3. How much iron is there in 2 kilograms of the ore?
Calculate the concentration of ions in the following saturated solutions. Al3+] in Al(OH)3 solution with [OH -] = 2.6 10-9 M
How much heat (in kJ) is required to warm 16.0g of ice, initially at -11.0 C, to steam at 112.0 C? The heat capacity of ice is 2.09 J/g*C and that of steam is 2.01 J/g*C.
How many grams Na3PO4 of will be needed to produce 475 mL of a solution that has a concentration of Na+ ions of 0.900 M ?
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