Determining the heat capacity
The molar heat capacity of a gas at constant pressure is 18.7J mol-1 K-1. What is the heat capacity of 9.4 moles of this gas at constant volume?
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Calculate ?H° for each of the following reactions using the data in Appendix 4: 4Na(s)+O2(g) ? 2Na2O(s) 2Na(s)+H20(l) ? 2NaOH(aq)+H2(g) 2Na(s)+CO2(g) ? Na2O(s)+CO(g) Explain why a water or carbon dioxide fire extinguisher may not be effective
A 2.54-cm-diameter faucet in the house can fill a cylindrical container with a diameter of 50 cm and a height of 32 cm in 12 s. How high above the faucet is the top of the water in the tower?
A 54.9 g sample of the compound X2O7 contains 33.6 g of oxygen atoms. What is the molar mass of element X
What is the process for drawing them? Is there a procedure to follow to be able to draw the lewis structure of any element and compound? If so, what is it?
What is the frequency of radiation whose wavelength is 13.40 Å? s-1 (b) What is the wavelength of radiation that has a frequency of 1.0 1012 s-1? m (c) Would the radiations in part (a) or part (b) be detected by an X-ray detector
Predict the sign of the change in entropy for the process that convert water in the gas phase to water in the liquid phase
Adding heat to tap water causes the dissolved oxygen to leave. Which of the two equations below represents a chemical reaction, and which does not?
Complete and Balance including physical states and solubility rules. MgCL2 (aq) + K3PO4 (aq)
In a laboratory, you determine that the density of a certain solid is5.23×10-6kg/mm3. Convert this density into kilograms per cubic meters.
A rigid tank contains 1.30 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 28.2 atm to 4.60 atm. Assume the volume of the tank and the temperature of the gas re
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