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A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. What is the final volume of the gas?
H3PO4 is a tripotic acid with a ka1=7.5x10^-3, ka2=6.2e-8 and ka3=4.8e-13. What is the value of K for H2PO4 PO4^3- + 2H+
Write the balanced chemical equation for the formation of liquid pentanol, C5H12O, from the elements. Be sure to include the state subscripts.
What assumption is commonly used to simplify the process of finding the pH for a solution of a weak acid
Determine the mass of ice that has melted. Assume that the heat capacity of the cup can be ignored. It takes 334 J to melt 1.00 g of ice at 0 c.
What are the two pKa values for carbonic acid? What is the pH of a 0.100M solution of potassium bicarbonate. What is the pH of a 0.100M solution of potassium carbonate
Indicate the number of unpaired electrons for following: [noble gas]ns^2(n-2)f^6 ? Please include the rationale?
For a given reaction, ?H= -19.9 kJ/mol and ?S= -55.5 J/K-mol. The reaction will have ?G=0 at what temperature? Assume that H and S do not vary with temperature.
a highly radioactive element is determined to contain 0.3256 mol of the element. What is the element?
determine the empirical formula of a substance (Vanillin) that contains 63.15% carbon, 5.30% Hydrogen, and 31.55% oxygen.
a 10.9-g mixture of nitrogen and carbon dioxide is found to occupy a volume of 8.88 l when measured at 641.9 mmhg and
given that the normal melting point of cyclohexane is 6.47 degree C and the enthalpy of fusion at this temperature is 2.68 kJ/mol. State any assumptions or approximations made.
He begins to characterize this potentially novel molecule by dissolving 9.9 mg of it in 855 mg of cyclohexane and finds the melting point of the resulting solution is 6.30C.
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