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Electrolysis is used to gold plate jewelry made of stainless steel. a)what half reaction takes place to plate Au^3+ on a stainless steel earring? b)is the earring the anode or cathode? c)why is energy needed to gold plate the earring
A solution is created by adding 0.05 moles of H2CO3 (3.1 g, total mass) to 5-L of water, resulting in a pH of 4.2. What is the alkalinity of this water (in meq/L)? Does the answer make sense, why or why not
When a 3.25 g sample of solid sodium hydroxide was dissolved in a calorimeter in 100.0 g of water, the temperature rose from 23.9 °C to 32.0 °C. Calculate ?H (in kJ/mol) for the solution process: NaOH (s) → Na+ (aq) + OH- (aq)
Write a balanced equation for the combustion of heptane, C7H16, in oxygen, , forming the products carbon dioxide, and water, H2O. How many grams of water will be produced by the complete reaction of 7.88 grams of heptane?
explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
A 6 cm string is fastened at both sides is plucked. What is the wavelength of the n = 3 standing wave? How many nodes does it contain.
Calculate the molality of a solution containing 292g glucose(C6H12O6) dissolved in 1.91L of water.
Starting with a 5-carbon alcohol, a 6-carbon alcohol, and malonic ester, complete the synthesis and name the product(using the Malonic Ester Synthesis)
An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00-L container.
An automobile gasoline tank holds 27kg of gasoline,when the gasoline burns, 85kg of oxygen is consumed, and carbon dioxide and water is produced. What is the total combined mass of carbon dioxide and water?
In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction (using lowest whole-number coefficients).
What is the product in a base catalyzed aldol condensation reaction between: 2 mmols acetone and 8 mmols benzaldehyde? 2 mmols acetone and 8 mmols 4-methylbenzaldehyde
Estimate the value of the equilibrium constant at 640 K for each of the following reactions. DELTA Hf and S^o for BrCl (g) is 14.6 kj/mol and 240.0 J/mol*k , respectively. 2NO2(g) double arrows N2O4 (g)
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