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A 261-mL sample of a sugar solution containing 1.23 g of the sugarhas an osmotic pressure of 32.4 mm Hg at 36°C. What is the molar mass of the sugar?
Write four equations showing structures for the reactions used in separating and recovering m-nitroaniline, benzoic acid, and naphthalene.
Greg Nard added an equivalent of 3,4-epoxy-4-methylcyclohexanol to an ether solution of methyl magnesium bromide and then added dilute hydrocholoric acid. He expected that that the product wou
Benzene (C6H6) is often produced asa side product during Grignard reactions using phenylmagnesiumbromide. Explain how benzene's formation can be made. Alsowrite a balanced equation for this reactio
The vapor from an unknown volatile liquid occupies a269 mL Erlenmeyer flask at 98.7.C and 748 Torr. The mass of the capor is0.791g.
A 0.036 M aqueous nitrous acid(HNO2) solution has an osmotic pressure of 0.92 atm at 26°C.Calculate the percent ionization of the acid.
When 2.50grams of copper(Cu) reacts with oxygen, the copper oxide product has a mass of 2.81grams. what is the simplest formula of the copper oxide?
Molarity of standard potassium bromate solution =0.006611Molarity of sodium thiosulfate solution = 0.015810.2761 grams of vitamin C is titrated with 62.34 mL of potassium bromate and 63.58 mL of so
Suppose that 4.5 L of methan at a pressure of 754 Torr is transferred to a vessel of volume 2.4 L. What is the final pressure of methane if the change occurs at constant temperature?
The value of k at the temperature at which the experiment was performed is 2.2 x 10-5 s-1. How many moles of the reactant were originally present in the apparatus, which has a volume of 350 mL?
0.5054 grams of soda ash was diluted with 25 mL of water. It was titrated with 90.51 mL of 0.08042M HCl.Calculate the moles and hence mass of sodium carbonate in thesoda ash.
What mass of Mg(OH)2 will be formed when 30.0mL of .200M MgCl2 solution is mixed with 25.0mL of 0.420 MNAOH solution?What will be the molar concentrations of the ions remaining insolution?
What are specific reactions that take place in a catalytic converters? What shapes of catalytic converters are common?
For a given sample of CH3OH, the enthalpy change on reaction is25.8kj. how many grams of hydrogen gas are produced? what is the value of delta H for the reverse of the previous reaction?
68.9257 amu is the mass of 60.4% of the atoms of an element with only two naturally occurring isotopes. the atomic mass of the other isotope is 70.9249 amu. Determine the atomic weight of the eleme
A sample of mettallic element X, weighting 3.177g, combines with 0.6015 L of O2 gas ( at normal pressure and 20.0 C) to form the metal oxide with the formula XO. If the density of O2 gas under these
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 degrees celcius, the volume of the gas is 367 mL. To what temperature must the gas be heated to occ
Aluminum is usually extracted from the ore bauxite (mostlyAl2O3). If thermally decomposed, the thermochemical reaction is 2Al2O3(l) -->4Al(s) + 3O2(g) Delta H = +3352 kJ
What is the blood alcohol level in mass percent is 8.76 mL of0.04988 M K2Cr2O7 is required for titration of a 10.0002 g sample of blood?
An aqueous solution of a protein with a concentration of 1.30g/L at 25°C had an osmotic pressure of 0.0160 torr. What was its molecular mass?
In a two component solution of sucrose, table sugar in water,the mole fraction of sugar is 0.0150. Calculate the percentage bymass of the sugar. Use 342 as the molecular mass of sugar.
What is the magnetism and expected bond order for N2+? And what is the character of the highest energy orbital that contains an electron?
Write the complete ground-state electron configuration of themolybdenum atom, using the building-upprinciple. (Type your answer using the format 1s2 2s2 for1s22s2.)
An ester is formed in the reaction of an organic acid with analcohol. For example, in the reaction of acetic acid (CH3COOH) withethanol (C2H5OH) in an organic solvent, the ester known as ethylacetat
When 0.0172 mol HI is heated to 500 K in a 2L sealed container, the resulting equilibrium mixture contains 1.9g of HI. Calulate Kc for the decomposition reaction.