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A beaker contains 21.0 g of hot water at a temperature of 88.8oC. After a while, the temperature of the water falls to 24.3oC. How much heat was lost by the water? The specific heat of water is 4.184 J g-1 oC-1.
A) 0.0879 kJB) 2.14 kJC) 0.0645 kJD) 5.67 kJE) 7.80 kJ
lithium metal dissolves in water to yield hydrogen gas and aqueous lithium hydroxide what is final concentration of hydoxide ions when 5.5 g lithium metal is dropped into 750 mL of water
the rate constant for a reaction is 7.7 x 10^-3 s^-1 at 25 C, and the activation energy is 33.6 kj/mol. what is k at 75C
Calculate the percent yield of salicylic acid (from 1.00 mmol isolated) from 7.00 g of Ben-Gay ointment. Ben-Gay ointment is 16% menthol
a calorimeter contains 25.0 grams of water at the temperature of fifteen degree celsius . when 2.10 grams of a
method would be a quick way to detect the presence of bromine/chlorine?
Calculate the number of moles of carbon dioxide formed if 231 grams of calcium carbonate decomposes. CaCO3(s) ? CaO(s)+CO2(g)
if 28.8g of methane gas ch4 are introduced into an evacuated 2.00-l gas cylinder at a temperature of35c what is the
A biochemist wants to utilize the following oligopeptide for biochemical assays. Estimate the number of charges on this peptide at different pH conditions by considering the charge states of amino acid residues at pH 2, pH 7.4 and pH 10.
Reversible adiabatic processes are isentropic. Are isentropic processes necessarily reversible and adiabatic?
Explain, using resonance as part of your answer, why a hydrogen adjacent to carbonyl groups (a-H's) are acidic. b. Give the mechanism for the Claisen ester condensation reaction.
Balanced thermochemical equation and enthalpy diagram, The decomposition of zinc carbonate, ZnCO3(s), into zinc oxide, ZnO(s), and CO2(g) at a constant pressure requires the addition of 71.5kJ of heat per mole of ZnCO3.
From your experimental data, how many moles of calcium carbonate are in one TUMS tablet? D. Using the value in your answer to question C. calculate the number of moles of HCI that two TUMS Tablets can neutralize.
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