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Problem- The root-mean-square speed of a gas is found to be 391.2 m/s at 270 K. Which of the following is the gas?
Write the complete solution in short and simple way
How many grams of ethanol (C2H5OH) (MW C2H5OH= 46.07 g/mol) would have to be burned to produce 450 kJ of heat
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP.
What are the required steps in the synthesis reaction of tert-butanol only using Ethanol (CH3CH2OH) and Methane (CH4)
Utilizing standard enthalpies of formation, find out how much heat is released when 25.0g of CH4 is subjected for combustion is excess O2? All reactants and products are gases.
What shape do you expect for molecules that meet the following descriptions. (a) A central atom with two lone pairs and three bonds to other atoms (b) A central atom with two lone pairs and two bonds to other atoms
In the DNA double helix, adenine forms three hydrogen bonds with thymine D) In the DNA double helix, cytosine forms three hydrogen bonds with guanine
A household lightbulb is a blackbody radiator. Many light bulbs use tungsten filaments that are heated by electric current. What temperature is needed so that ?max=550nm?
How many moles of HCl are required to make 15.00 ml of an aqueous 2.500 molar HCl solution
a 355 ml container holds .146g of ne and an unknown amount of ar at 35 degrees c and a total pressure of 26 mmhg.
The density of hydrogen gas in a flask is 0.147 g/L at 305 K. what is the pressure inside the flask? Calculate the density in G/L of CH4(g) at 75 Celsius and 2.1 atm (R= .08206 L*atm/mol*K).
Write the chemical equation for the formation of HBr from H and Br atoms. Lone pairs do not need to be included. Using the table of bond energies determine the ?H for the above reaction. (KJ/Mol)
Sulfamic acid, HSO3NH2, and sodium nitrite, NaNO2, should not be brought together as solids for safety reasons, why is water added to the vial containing your unknown sample as well as to the Erlenmeyer flask containing sulfamic acid
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