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How many mL of boiling water are required to dissolve 92.0 g ofphthalic acid?(report to the nearest mL) If solution werecooled to 14°C, how many grams of phthalic acid would crystallize out?
Suppose you are trying to determine the melting point of a compoundand the compound turns from white to brown before melting. Whathappened and how would you correct it?
Adipic acid and citric acid have very similar melting points. Given two unknown samples, one being citric acid and the other adipicacid, how could you determine which was without using spectroscopy?
To what temperature will a 50.0 g piece of glass raise if it absorbs 5275 joules of heat and its specific heat capacity is 0.50J/goC? The initial temperature of the glassis 20.0oC.
Why was filteration not chosen as one of the separation methodin expriment of mixing sio2, NaCl andNH4CL and then seperte them?
How many joules of heat are needed to raise the temperature of 10.0g of aluminum from 22oC to 55oC, if thespecific heat of aluminum is 0.90J/goC?
A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water toform 0.250 L solution.
An average man requires about 2.00mg of vitamin B2 per day. How many pounds of cheese would a man have to eat per day if this washis only source of vitamin B2 and if the cheese contained 5.5μg(mi
Heparin was treated with dimethyl sulfate. The product was hydrolyzed under acidic conditions. Draw the structure of the reaction products. Assume that amide bond is also hydrolyzed under the reacti
The decomposition of N2O into N2 andO2 is a first-order reaction. At 730C thehalf-life of the reaction is 3.58 x 103 minutes. If the initial pressure of N2O is 2.1 atm at 730C,calculate the total ga
For NH4Br dissolving in water, ΔHsoln is17kJ/mol. Write an equation that represents the solubility equilibrium for NH4Br dissolving in water. Include heat in the equation.
The normal boiling point of ethanol(C2H5OH) is 78.5'C. Using the information from Thermodynamic Data at 1 atm and 25'C, and the following information:
Polonium metal crystallizes in a lattice which contains onlyone Po atom per cubic unit cell. The radius of a polonium atom is1.67 Å.
Aluminum hydroxide reacts with sulfuric acid. Which reagent is the limiting reactant when 0.700 mol of aluminumhydroxide and 0.700 mol sulfuric acid are allowed toreact?
What does it mean by Carbocation of a molecule is expected to rearrange or not expected to rearrange ? Would you show me with some diagrams ?
Based on the synthesis chart provided in the Organic course notes,what is the smallest number of synthetic steps needed to convert aketone to an alkane?
If salt is used on icy roads in the winter to lower the freezing point of water to assist inmelting, in theory, what substance can be used to increase the boiling point of that same water?
Calculate the concentration of CN- and the pH for asolution that is made by mixing 50mL of 0.1 M HClO4 with4.2 mL of 0.438 M NaCN. Assume HClO4 to be a strongacid, NaCN to be a strong electrolyte (d
Calculate the final temperature if the same gas under goes an adiabatic expansion against an external pressure of P = 1.00 bar to a final pressure of P =1.00 bar.
What happens to therate if the concentration of potassium t-butoxide is tripled and the concentration of ethyl bromide is doubled?
A system consisting of 57.5 g of liquid water at 298K is heated using an immersion heater at a constant pressure of1.00 bar. If a current of 1.50 A passes through the 10.0-ohmresistor for 150 s, wha
How many beta particles are emitted in 180 s by a 3.75-mgsample of Cobalt-60? What is the activity of the sample in Bq?
Assume that the smallest volume that you can dispense is 1.0 ml and that you have 3.5 L of an in expensivediluent. You have a stock solution that has a concentration of8 M, and you need to make 100
A quantity of electricity equal to 9.263 x 104 C passes through a galvanic cell that has an Ni(s) anode. Compute the maximum chemical amount, in moles, of Ni2+ (aq) that can be released into solutio
Compound A has a solubility of 18 grams per 100 grams of water at25 Celsius. Cooling a saturated 200 g solution of compound Afrom 84 celsius to 25 celsius results in a precipitation of 19grams of t