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It is given that the half-life of 137Ce =30. Years. Determine how many grams will remain in 150 Years If we have 150.000 g of 137Ce now,?
Determine the pH of a solution made by mixing 10.5 grams of CH3COONa (sodium acetate,) to 400 mL of 0.180 M HCl (hydrochloric acid. )assume no change in volume takes place
How many moles of nitrogen are needed to react with 42 moles of oxygen?
Draw the bondline structures of the isomers of this compound in the manner requested: Its diastereomer C, its optically active isomer D.
an antifreeze solution prepared by mizing equal volumes of ethylene glycol, C2H6O2 (density 1.12g/cm^3) with water (density 1.00 g/cm^3). Estimate the freezing point of the mixture
The rate constant for a reaction at 40.0 degrees Celsius is exactly 3 times that of 20.0 degrees Celsius. Calculate the Arrhenius energy of activation for the reaction.
Calculate the mass of silver chloride in grams required to make 4.4g of silver plating.
the value of electronegativity for magnesium 1.2 and the value for oxygen is 3.5. determine what type of bond is
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
Determine which of them exhibit resonance. (In other words, which of the following molecules exhibit resonance? Note: there is more than one answer and you must choose all of the molecules in the list that exhibit resonance.)
Estimate the heat of formation of water dHf(H2O)(g) from its elements, provided the following bond energies. Write the equation.
A perfect gas has a constant volume molar heat capacity of CV,m = 1.5× R, and a constant pressure molar heat capacity of Cp,m = 2.5× R. For the process of heating 4.50 mol of this gas with a 12 W heater for 400 seconds, calculate
Identify the longest, shortest, strongest and weakest bond out of the following: a triple bond, double bond, a single bond carbon attached to methyl groupCH3- CH2- CH- CH3 | CH3 and a single bond between a doubly bonded carbon attached to methyl g..
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
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