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What is the Cu2+ concentration at 25*C in the cell Zn (s) I Zn2+ (1.0M) II Cu2+ (aq) I Cu(s)? The cell potential is 1.04 V. The standard cell potential is 1.10 V.
a. 0.097 Mb. 1.0 Mc. 2.4 Md. 0.1 Me. 0.0094 M
What volume of chlorine gas is produced when 0.952 mol of hydrochloric acid reacts completely according
A 0.250g sample of citric acid dissolved in 25.0 mL of water requires 37.20 mL of 0.105 M NaOH for complete neutralization. What is the molecular formula of citric acid?
calculate the stoichiometric air-fuel ratio of a fuel blend containing 80 vol.% ethanol and 20 vol.% gasoline
Chemical analysis of the two compounds reveals that 0.25 mol ACl 2 has a mass of 100.0 g and 0.50 mol BCl 2 has a mass of 125.0 g. Determine what are the molar masses of ACl 2 and BCl 2 ?
The pK value of the system is 6.1. If the [CO2] is expressed in terms of partial pressure and equals 1.3kPa and the bicarbonate concentration is 2.2 x 10^-3 M, what is the pH of the solution.
A solution is made by dissolving 0.45 moles of LiCl to make 150 mL of aqueous solution. What is the molarity of the solution?
5.00 mL of a 0.650 M solution of oxalic acid are dilute to 25.00 mL. If 27.11 mL of a NaOH solution are required to neutralize this diluted oxalic acid, what is the concentration of the NaOH in molarity terms
A sample of alkaline earth metal carbonate (MCO3:.250g) was added to 10mL HCl (.4M). Carbon dioxide gas evolved out from the solution. after reaction was completed, the solution was titrated back with NaOH solution (3.05mL;.15M)
Calculate the concentration of sugar in % (w/v) for 250-mL solution that contains 4.32g og sugar
What is the Freezing point of an aqueous glucose solution that has 25.0g of glucose, C6H12O6, per 100.06 H2O (Kf=1.86)
Inspection of an IR spectrum rarely reveals the identity of the compound. However, one can often identify what?
In ploystyrene beaker , we mixed 30 mL of 0.1 M sodium acetate and 15 mL of 0.1 M hydrocloric acid. we measured the PH ( in PH meter ) it was 4.86 and then we added 5 mL of 0.1 M NaOH to this buffer.
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