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A 0.2044 g sample of potassium hydrogen phthalate (KHC8H4O4, a primary standard) was quantitatively transferred to a 100.00 mL volumetric flask and water was added to the mark.
calculate the pH of the solution that results when 40.0 mL of 0.100 M NH3 is mixed with 20.0 mL of 0.200 M NH4Cl solution.
A piece of tin weighing 85.251 g is placed into 41.1cm3 of ethyl alcohol (D=0.798) in a graduated cylinder and it sinks to the bottom . The alcohol rises to 52.8cm3
The solubility of benzaldehyde in dichloromethane is 5 g per 100mL. What mass of benzaldehyde can be recovered by extraction with 3x 50 mL portions of dichloromethane
What are the products of a Diels-Alder reaction between 1mL (12mmol) of cyclopentadiene and 1.393g (12mmol) of fumaric acid? and what is the Theoretical Yield? please show calculations
About how much phenacetin will remain dissolved when the water calculated (94ml) is cooled to room temperature
What is the final dilution obtained after each dilution series shown below? Express each answer in exponential numbers.
In a Diels-Alder reaction between 1mL (12mmol) of cyclopentadiene and 1.393 g (12mmol) of maleic acid, How do you calculate the Theoretical Yield
discribe how to prepare this solutions show all work and calcualtion? a) 50mL of asolution containing 0.15M malonic acid [CH2(COOH)2 plus 0.02 manganese sulfate [ MnSO4] b) 100 mL of 0.08M sulfuric
combining 0.228 mol of FecO3 with excess carbon produced 13.2g of Fe. Fe2O3 + 3C -> 2Fe + 3CO what is the actual yield of iron inn moles? what is the theoretical yield of iron in moles? what is t
Assuming efficiency of 26.70 %, calculate the actual yield of magnesium nitrate formed 139.4 g of magnesium and excess copper (II) nitrate. Mg + Cu(NO3)2 -> Mg (NO3)2 + Cu
You have 47.0 L of 93.00 M stock solution that must be diluted to 0.500 M. How much water should you add
What NaCl concentration results when 234 mL of an 0.640 M NaCl solution is mised with 6.52 mL of a 0.450 M NaCl solution
85.2 g sample of compound X4O10 contains 48.0 g of oxygen atoms. what is the molar mass of element x
How many grams of heavy water are required to produce 145.0 mg of ND3(g). The mass of deuterium, D, is 2.014 g/mol
Write structural formulas for all of the possible isomers of -pentyne that can be formed by moving the position of the triple bond
Iron has a density of 7.874. g/cm3. What is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm
How many grams of FeSO4.(NH4)2SO4.6H2O (MW = 392.14) must be dissolved and diluted to 250.0 mL to prepare an aqueous solution that is 10.00 ppm Fe2+ by weight (1.00 ppm = 1.00 mg/L)
A common piece of laboratory glassware is a 125 mL beaker. What is this volume in the English system of units? [1 quart = 946. liter = 32 fl oz]
Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sample contains 0.32 g of X and the other contains 0.41 g of X. Identify
Give a brief discussion of the chemistry of Diels-Alder reactions and why do ENDO products usually predominate
The density of an unknown substance was determined by adding a weighed piece to a graduated cylinder containing 37.3 mL of water. After the substance was submerged the water level was measured at 46
Identify the longest, shortest, strongest and weakest bond out of the following: a triple bond, double bond, a single bond carbon attached to methyl groupCH3- CH2- CH- CH3 | CH3 and a single bond be
A car averages 45.00 miles per gallon of gas. How many kilometers can it travel on 10.0 liters of fuel
This is for the dissolution of (NH_4)(NO_3) in water. If 4.52 mole of NH_4 NO_3 are dissolved, how many total moles of ions are produced