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Calculate the entropy change of 1.0 mol of an ideal gas that undergoes an isothermal transformation form an initial state of pressure Π = 1.50atm and volume 500cm3 to a final state of pressure of = 0.09atm.
Compute the threshold frequency (Hz) of a metal if that metal emits an electron with a velocity of 3.28 × 105 m/s when illuminate with light that has a wavelength of 260 nm.
What are the average calories (not Calories) per gram for each of your food items?
Problem- Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 6.29 mL of butane (d=0.579g/mL).
The energy released during the combustion caused a 14.2 degree Celsius increase in the temperature of 200.0mL of water in the calorimeter. Compute the mass of peanut burned.
The heat combustion for a sample of coal is 23.0 kJ/g. What quantity of coal (in grams) must be burned to heat 500.0g of water from 20.0Celsius to 95.0Celsius. The specific heat capacity of water is 4.184(J)/(Celsisus)(g).
Uranium hexafluoride is a solid at room temperature, but it boils at 56°C. Determine the density of uranium hexafluoride at 62°C at 755 torr.
The enthalpy of combustion of benzoic acid (C6H5COOH) is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be 3226.7 kj
What is the molarity of a sodium hydroxide solution if 34.26 mL react with 0.337g of sulfamic acid
A piece of copper has a volume 640 L. How many atoms does the sample contain.
A stock solution is prepared by adding 30 mL of 1.7 M NaNO2 to enough water to make 49 mL. How many moles of NO2- are in 35 mL of the stock solution
Cesium atoms are the largest naturally occurring atoms. The radius of a Cs atom is 2.62 angstroms? How many Cs atoms would have to be laid side by side to give a row of Cs atoms 1 inch long
consider the reaction using equal volumes of 10.0ml solutions of 0.25M calcium chloride and 0.25 M silver nitrate poured into a test tube. write the balanced equation, net ionic equation, identify the precipitate, identify the supernate and predic..
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