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A hot water bottle contains 960. g of water at 59 degree C. If the water cools to body temp (37 degree C), how many kilocalories of heat could be transferred to sore muscles?
The compound is composed of 41.39% carbon, 3.47% hydrogen and 55.14% oxygen. The molecular mass is 116.07 g/mol. What is the molecular formula?
the enthalpy change for melting ice at 0c and constant atmospheric pressure is 6.01 kjmol. calculate the quantity of
You need to produce a buffer solution that has a pH of 5.02. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? ..
The molar enthalpy of fusion of solid silicon is 46.4 kJ mol-1, and the molar entropy of fusion is 27.6 J K-1 mol-1.
calculate the molar concentration of a solution prepared by dissolving 5.4 g of sodium sulfate mw 142 in enough water
when 16.8 j was added as heat to a particular ideal gas the volume of the gas changed from 42 cm3 to 87 cm3 while the
Find the pH of a solution after 0.10 mol of HCl is added to 1.0 L of a buffer solution that contains 1.40 M NH3 and 0.90 M NH4+.
bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. if 10.0 g of calcium
Express your answer in condensed form in order of increasing orbital energy. Write out the electron configurations for:
Compare the acid or base strength of the following compounds and explain your ordering by explaining in terms of the difference in the structure.
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO, and then treat the oxide sample with HCl.
What pressure is needed to confine an ideal gas to 102.0 L after it has expanded from 8.0 L and 1.0 atm at constant temperature
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