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Explain how the moisture affects the percentage calculation. In the dehydration of hydrated salt, the sample was slightly moist because of high humidity.
Determine the molarity of an AgNO3 solution if the 53.7 mL of the KCl solution react exactly with the 46.0 mL of the AgNO3solution? A solution is prepared by placing the 26.7 g of KCl in
Calculate the effect on the boiling point of a solution (e.g., H2O) which is produced by a soluble nonvolatile substance (e.g. NaCl)? Determine the effect of an insoluble substance such as
Can toluene and cyclohexane be separated if the external pressure is 350 torr instead of the 760 torr? Explain what effect does the reduction of atmospheric pressure have on the boiling poi
A kids wear purchaser requires to prepare the assortment for jeans (40%) and shorts (60%). Create assortment plan. Find assortment volumes and model stock plans for jeans and shorts respectively?
Discuss what would be the purpose of using a copper sponge in a fractional distillation? And why the fractional distillation is better than a simple distillation?
A solution is prepared in a 0.900 L volumetric flask by placing 16.5 g of KCl and adding water to dissolve the solid, then filling the flask to the mark.
Determine the energy difference among the least stable chair confirmation of trans-1,4-dimethylcyclohexane and the most stable confirmation of cis-1,3-dimethylcyclohexane by using a value of 3.6 kJ
Determine the ratio of the more stable chair conformation to the less stable conformation at equilibrium at 298Kfor the following compounds: iodocyclohexane and cholrocylcohexane.
Select the ions or atoms from the following sets that are is electronic with each other: (a) Na+, Sr2+, Br- (b) Y3+, Br-, Kr (c) N3-, P3-, Ti4+ (d) Fe3+, Co3+, Mn2+
Write down the equation for the reaction, if any, of lithium with the nitrogen. If there is a reaction producing the LixNy, determine the value of x+y?
Provide the grams H, C, and O present in the substance, the empirical mass, the empirical formula and the molecular formula of the substance. Where the molar mass 116.16 g/mole
Explain how much heat is released when the 4.25 g of propanol is burned? Determine the numbers of grams of propanol must be burned to obtain the 150. kJ of heat ?
Assuming the specific heat of the resulting solution is equal to that of pure water; determine the final temperature of the solution if the molar heat of solution of a substance is fo
Explain how much KOH(s) must be dissolved in exactly 1 L of solution, so that 25.00mL of this solution is needed to titrate to the equivalence point a solution which is having 0.3220g of a monoproti
Consider the titration among the 25.00 ml of 1.00 x10-2 M solution of hydroxyl acetic acid with 1.50 x10-2 M solution of KOH. Determine the pH for 0.00ml and 2.00ml of base added. Ka= 1.48 x
What were the partial pressures of oxygen and helium when a 6.00-L gas tank contained a mixture of oxygen and helium at a pressure of 20.1 atm and the mixture was 75% helium?
Product A gives $6.00 per unit to profit, product B gives $4.00 per unit, and product C gives $10.00 per unit. Determine optimum mix of products in terms of maximizing contributions to profits?
Determine the numbers of grams of potassium chloride are essential to make the100.0 mL of a .200 M solution?
Discuss how do you determine the grams needed and determine the numbers of grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to the 650. mL of 0.898-M solution of NH
Discuss the staining theory for Basic, Gram and Negative Staining and illustrate the relative advantages of each of these techniques.
Calculate whether each of the five compounds is predominatelyionically or covalently bonded. Indicate whether the compound would be expected to be more soluble in the methylene chloride or more solu
Compound "A" (C6H14) provides three different monocholrides when subjected to photochemical chlorination. One of these monochlorides offers no reaction when treated with the KOH/alcohol.
Which of the given is equal to number of ways to put all forty in a row for the picture, with all 12 sophomores on left, all eight juniors in middle, and all twenty seniors on the right?
Determine how are the 3s, 3p, and 3d orbital similar and different from each other. In what ways are all s orbitals alike, and in what ways are s orbital that have different principal quantum numbe