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When the concentration of Zn2+ ion is 0.45 M, the measured voltage of the Zn-Cu zell is 0.40 V. What is the Cu2+ ion concentration?
Write the expression for the equilibrium constant. b. Which way would the reaction shift in each of the following cases?
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
find out the ΔH rxn for the given reaction as C 3 H 4 (g) + 2 H 2 (g) → C 3 H 8 (g)
Draw intermediate and final products. Cyclopentene ----->NBS above arrow and heat,peroxides below arrow. Give intermediate. Then ----------> NaOCH2CH3 above arrow and CH3CH2OH,heat below arrow. Give products
How many grams of the excess reactant remain after the limiting reactant is completely consumed
What is the pH of a buffer solution that is 0.211 M in lactic acid and 0.111 M in sodium lactate? The Ka of lactic acid is 1.4 × 10-4.
Which of the following solutes in aqueous solution would be expected to exhibit the largest freezing-point lowering (assuming ideal behavior)
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
sodium vapor lamps used for public lighting emit yellow light of wavelength 580 nm. how much energy is emitted by an
Identifying and balancing the different types of chemical reactions. Evaluate which processes represent chemical reactions.
calculate the number of moles of the compound that could theoretically be generated. Use the value ?G°\'compound X = -62.3 kJ/mol. Round your answer to two significant figures.
in the formula for sodium phosphate na3po4 how many moles of sodium are represented? how many moles of phosphorus? how
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