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Charcoal is primarily carbon. Determine the mass of CO2 produced by burning enough carbon to produce 5.00 x 102 kJ of heat. C(s) + O2(g) = CO2(g) DH = -393.5 kJ
What is the volume of the bubble (in cubic centimeters) just before it reaches the surface? (The density of water is 1000 kg/m^3 and air pressure is 1E+05 N/m^2.)
Write a mathematical equations that show how you will calculate the detected activity from the count rate due to background radiation and the sample of KCl
For a particular orbital, as one goes away from the nucleus along the z-axis, the probability desity decreases to zero, then increases, and finally decreases without increasing a second time. This is consistent with
When the reaction is complete, what is the concentration ratio of conjugate base to acid? How many moles of strong base were initially added
Using the Moles of HCL and the mole ratio of the balance equation calculate the moles of NaHCO3 that reacted with the HCL
He begins to characterize this potentially novel molecule by dissolving 9.9 mg of it in 855 mg of cyclohexane and finds the melting point of the resulting solution is 6.30C.
969 ml of gas was collected at 64 degrees celcius and a pressure of 723 mm Hg. Find the volume at STP.
silver iodide in grams will dissolve in a solution that is a 2.0 x 10^-4 M silver nitrate when the system reaches equilibrium
What is the approximate thermal energy in kJ/mol of molecules at 0° C? Express your answer to the nearest 0.1 kJ/mol
the empirical formula of a substance is bh3 the exper molar mass is 27.67 gmol. determine the molecular formula of the
For the molecule shown below, choose all the statements that are true. Soluble is where at least 10 drops of the compound can be added to a particular solvent (in this case, water or hexane -- CH3CH2CH2CH2CH2CH3) and the result is one homogeneous ..
A gas is placed in a storage tank at a pressure of 20 atm at 20.3 C there is a small metal plug in the tank made of a metal alloy that melts at 125C what is the maximum pressure in the tank?
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