Delta of combustion of the propane
Question: 3 grams of propane burns and warms 100 grams of water from 20 degrees Celsius to 100 degrees Celsius. What is the delta H of combustion of the propane. What is the sign (positive or negative) of delta H?
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A velocity selector in a mass spectrometer, like that shown in Figure 21.39, uses a 0.130 T magnetic field. (a) What electric field strength is needed to select a speed of 4.50 106 m/s. (b) What is the voltage between the plates if they are separa
How much volume of the low acid wine do you need to mix with the 9.0 g/L TA wine to have the resulting blend equivalent to 7.2 g/L. What is the final volume of the blend?
What are the alkene products of 2-bromo-3-phenylbutane treated with sodium methoxide
The lemon juice(analyte) before the end point was reached. Estimate the analyte concentration, assuming that the acid in the lemon juice is monoprotic.
Why does the pH of the blood decrease in a person who has digested tremetol? Answer A. Lactic acid build up decreases blood pH B. Hydrogens pumped by the electron transport chain decrease blood pH C.
A glucose solution contains 52.0 g of glucose (C6H12O6) in 465 g of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/ml for water.)
The isomerization of cyclopropane to form propene is a first-order reaction.
Question: 153 grams of metal have a specific heat of 0.061 cal/g C and at a temp of 99.1C is added to 85.0 grams of water at 23.5C What will be the final temp of the water when equilibrium is reached ?
If k = 2 x 10^-5 L/mol-sec at 25 degrees C and k = 2 x 10^-4 L/mol -sec at 100 degrees C, determine the activation energy Ea in Joules/mol.
Some calcium supplements contain calcium citrate, Ca3(C6H5O7)2, and others contain calcium carbonate, CaCO3. Which compound has the higher mass percent of calcium?
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