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Consider the crystalization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40 degrees celcius rather than 78 degrees celcius (BP of ethyl alcohol), howw would this affect the percentage of recovery of pure sulfaniamide? Explain why.
when 56.6 g of calcium and 30.5 g of nitrogen gas undergo a reaction that has a 93.0% yield, what mass (g) of calcium nitride forms.
What is H in kJ for the process of freezing a 28.9 g sample of liquid silver at its normal melting point of 961 oC.
Calculate the number of moles of KHP? b. How many moles of NaOH will react with the KHP dissolved in water? c. Calculate the Molarity of the NaOH solution?
determine How many grams of Phosphine (PH3) can produce if 37.5 grams of P4(phosphorus) and 83.0 Litres of H 2 gas react at STP?
Which of the following reactions notate the formation reaction of CO(g)? 1. C(s) + 1/2 O2(g) ? CO(g) 2. CO(g) ? C(s) + 1/2 O2(g) 3. 2C(s) + O2(g) ? 2 CO(g)
The combustion of magnesium metal is described by the following equation. What mass of magnesium must be burned to produce 1.00 kJ of heat
If a balloon containing 1,200 L of gas at 25C and 760 mm Hg pressure ascends to an altitude where the pressure is 380 mm Hg and the temperature is 54C, the volume will be.
What is the atomic radius of each atom that composes it If the length of a face centered cubic unit cell is 0.200 nm,?
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa.
When 2-methylpropene is treated with sulfuric acid the resulting mixture can be used to convert benzene to tert-butylbenzene
Balance the following redox reaction in acidic conditions by following the instructions described below: As2O3 (s) + NO3- (aq) > H3AsO4 (aq) + NO (g)1. Determine the oxidation state of each of the elements or compounds involved in the reaction
Water in the sample extracts into the methanol, which is then analyzed. If GC analysis of the methanol yields a peak height of 13.66, what is the % w/w water in the antibotic?
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