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Calculate the de Broglie wavelength in meters of a neon atom with a mass of 3.35 × 10(-26) kg that has a speed of 2.32 × 106 m/s. Express answer in scientific notation.
silicon si has three naturally occurring isotopes 28si 29si and 30si. determine the number of protons neutrons and
What is the standard reaction enthalpy for which the equilibrium constant is doubled when the temperature is increased by 10 C at 298 K
Benzene (C6H6) is converted to cyclohexane (C6H12) by direct addition of hydrogen gas H2. The plant produces 100 Ib-moles/hr of cyclohexane. 90% of benzene fed to the process reacts to form cyclohexane.
How much heat is required to vaporize 18.5g of water at 100c. The heat of vaporization of water at 100c is 40.7kj/mole.
If a non-cyclic alkane shows a molecular ion peak at m/z 2.4*10^2, what is the chemical formula
calcium carbonate reacts with hydrochloric acid to forma a salt carbon dioxide and water. write the balanced equation
An element has three naturally occurring isotopes with the following masses and abundances (in parenthesis): 27.977 amu (0.9222); 28.974 amu (0.0469); 29.974 amu (0.0310). Calculate the atomic weight of the element.
What is the partial pressure of H2O in the compressed gas mixture? (See this table.) torr (b) What mass of water vapor condenses to liquid g
A running automobile produces CO at a rate of 188g CO per hour. A car is left idling in a garage 5.2m long, 4.0m wide, and 2.2 m high at 20 degrees C. How long would it take to build up a lethal concentration of CO of 1000 ppmv?
How many moles of H+ (H3O+) are produced in 40.0 m of 0.025 M HCL?
Gold(III)oxide, Au2O3, undergoes a thermal decomposition reaction to form gold metal and oxygen gas. Write a balanced molecular equation that describes this reaction.
Methane, CH4, the major component of natural gas burns in air to form CO2 and H2O. What mass of water is formed in the complete combustion of 5.00 ´ 103 g of CH4
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