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Consider the titration of 30.0mL of 0.050 M NH_3 with 0.025 M HCl. Calculate the pH after the following volumes of titrant have been added.
a) 0mL b)20.0 c)59.3 d)60 e)72.6 f)73.1
Find the limiting reagent in this solution. b) Calculate the theoretical yield of water. c) Calculate the percent yield of water
What components of phospholipids contribute to the liquid crystal nature of membranes
Write the structure for the quinoxaline derivative obtained when benzil is the reactant. Do you think this compound would be coloured? If so, why?
student takes 116. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
Consider the following isomerization reactions of some simple sugars and values for their standard Gibbs free energy ΔG °:
How much heat is evolved when 239 g of ammonia gas condenses to a liquid at its boiling point?
compound be meso if it only has one chiral center? For example, is 1-chloro-1-methylcyclohexane a meso compound?
Compound A has a parent peak of M+ = 95 m/z in its mass spectrum and shows a medium intensity sharp infrared absorption band at 2280 cm. The HNMR of compound A shows 3 signals in a 4:4:1 ratio.
A canister is filled with 310 g of ice and 100 g. of liquid water, both at 0 C . The canister is placed in an oven until all the has boiled off and the canister is empty.
an acetic acid solution of 2.87 pH is titrated with 1.5 mL of bromocresol green. When the color changes to light green
5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?
How many grams of ice at 0°C and 101.3kPa could be melted by the addition of 0.40kJ of heat? Find the molar heat of fusion.
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