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Four moles of an ideal gas with a constant-volume molar specific heat of 26.0 J / mol·K started out at a temperature of 24.3 °C and a pressure of 5.310 × 104 Pa. The state of the gas was then changed to a final temperature of 46.1 °C and a final pressure of 4.170 × 104 Pa.
What was the change in the entropy of the gas during this process?
suppose that 1.08 g of rubbing alcohol c3h8o evaporates from a 75.0 g aluminum block.if the aluminum block is initially
The mass of an electron is 9.11× 10-31 kg. What is the uncertainty in the position of an electron moving at 1.00 × 106 m/s with an uncertainty of ?v = 0.01 × 106 m/s
A 12.00-g sample of a compound is analyzed and found to be composed of 3.478 g lithium, 0.505 g of hydrogen, and 0.817 g oxygen. What is the percentage composition of this compound?
a sample of N2O3(g) has a pressure of 0.019atm. the temperature(in K) is then double and the N2O3 undergoes complete decompositopn to NO2(g) and NO(g).
a sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256g of O. What percentages of Mg and O in this compound?
B2H6 + 3O2= B2O3+3H2O ;DELTA H=-2035KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
Which of Elsa's symptoms is NOT typical of anemia in infants?
Using the following list of normal boiling points for a series of normal hydrocarbons, estimate the normal boiling point for octane, C8H18. Be certain to explain your procedure
The decomposition of XY is second order in XY and has a rate constant of 7.02 x 10^-3 M^-1 x s^-1 at a certain temperature.
delta H=483.6 kJ/mol If 2.0 moles of H2O(g) are converted to H2(g) and O2(g) against a pressure 1.0 atm at 145 degrees C, what is the delta E for this reaction?
Describe various energy changes in a chemical reaction
An isotonic solution contains 0.87 by mass per volume. Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 15. Assume a van't Hoff factor of 1.9 for all ionic solutes.
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