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a solution containing 4.2 g of KOH and Ca(OH)2 is neutralised by an acid . if it consumes 0.1 equivalent of acid , calculate composition of sample in solution.
The amino acid selenocysteine, found in the active site of various enzymes, is identical to cysteine except the sulfur atom is replaced by a selenium atom. Selenocysteine is said to act as a better nucleophile than Cysteine
Determining Copper in Brass, 1st I titrated Na2S2O3 and determined the molarity to be 0.164. I am having trouble with the calculations for the dissolution of brass.
Draw electron-dot formula and determine the shape for each of the following: a) NH4^+; b) O2^2-; c) COCl2 (C is the central atom); d) BCl3.
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
State the hybridization of the nitrogen atoms in urea - determine how many of the molecules below are physically possible
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
A leaky faucet drips water at a rate of 1 drop every 2 seconds exactly. If 1 mL is equal to 20 drops exactly, how many weeks would it take for the faucet to leak 346 ft^3 of water
Reaction pathway and balanced reaction between xenontetra flourideand water to give xenon trioxide and xenon in 1:2 ratio respectively
The reaction between bromate ions and bromide ions is acidic solutions is given by the following equation BrO3-(aq) + 5Br-(aq) + 6H+(aq) -> 3Br2(l) + 3H2O(l)
Sketch a graph of the van Deemter equation (plate height vs. linear flow rate). What would the curve look like if the mutliple path term were 0? If the longitudinal diffusion term were 0? If the finite equilibration time term were 0?
Ascorbic acid (Vitamin C, H2C6H6O6) is a diprotic acid. In a laboratory exercise, a vitamin C tablet was analyzed by titration using 0.125 M NaOH(aq). On the average, it required 29.5 mL of the base to neutralize the acid in the one tablet. How ma..
calculate the mass of c2h6o2 that must be added to 1.00 kg of ethanol c2h5ohto reduce its vapor pressure by 13.2 torr
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