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Considering the limiting reactant concept, how many moles of C are produced from the reaction of 2.00 mol A and 4.50 mol B?
A(g) + 3 B(g) → 2 C(g)
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
Calculate the number of chromium atoms in a 2.0 cm by 1.0 cm by 7.0 cm piece of this stainless steel. Calculate the number of 52Cr atoms in the above sample. The natural abundance of 52Cr is 83.789%.
Determine which enantiomer of 2-iodo-3-phenylbutene gives the E product (2R, 3R or 2S, 3R), and explain clearly (using unambiguous diagrams) why that is the case.
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
The zinc in carbonic anhydrase is tetrahedrally coordinated by three neutral nitrogen-containing groups and a water molecule. The coordinated water molecule has a pKa of 7.5, which is crucial for the enzyme's activity. Draw the active site geomet..
If 20 mL of 0.10 M NaOH are added to 30 mL of 0.20 M HOAc, what is the pH of the resulting solution? (Ka = 1.8 x 10-5 for HOAc)
Draw the SN2 mechanism using curved arrows for the reaction of bromethane with Nu. Draw the SN2 mechanism using curved arrows for the reaction of 2-bromopropane with Nu
William Tell had only one attempt to shoot an apple from the top of his son's head with his bow and arrow.
A liquid that has a density of 0.80 0.01g/ml and 0.80-0.01 g/ml is insoluble in cyclohexane. what is the liquid? what is the boiling point of cyclohexane at 600 mm hg?
A dark yellow layer formed on top of the reaction mixture during cooling. The mixture was vacuum filtered to yield a solid - explain the color changes in bold - the chemical reactions.
Calculate ?G (in kJ) at 65 oC for the reaction- N2O(0.0024 atm) + H2(0.24 atm) ? N2(846.0 atm) +H2O(l)
Derive the value of the flow of energy from Earth's surface to the atmosphere as a result of evapotranspiration.
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