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a) Calculate the initial velocity of a reaction in terms of Vmax if the substrate concentration is 1/2 the Km (substitute and go).
b) Calculate the initial velocity of a reaction if the substrate concentration is 4 times the Km.
Write a hybridization and bonding scheme for each molecule. Sketch the molecule, include overlapping of orbitals, and label all bonds. a) CCL4 b)NH3 c)OF2 d)CO2
Aqueous solutions of 30% (by weight) hydrogen peroxide, H2O2, are used to oxidize metals or organic molecules in chemicals reactions. Given that the density of the solution is 1.11 g/mL, calculate the molality, molarity, and mole fraction.
Using words and pictures, explain why impurities usually lower the melting point of a substance. Next, imagine a case where an impurity actually RAISES the melting temperature of a pure substance
What volume (in ml) of coffee should be diluted to 25ml prior to analysis using only standard transfer pipets with integer values from 1-10ml
Identify the potential donor atoms in each of the following Lewis bases and classify the donor atom(s) as hard soft or borderline bases
The n.itrogen is converted to N2(g) and collected. given that 350-mg same yields 42.2 ml N2 at STP, calculate the percentage of nitrogen in the sample
What is the density (in grams per liter) of a gas mixture that contains 26.0 % F_2 and 74.0 % He by volume at 743 mm Hg and 28.5 C?
1.What is the pressure in a 23.0L cylinder filled with 0.740mol of nitrogen gas at a temperature of 325K. answer using atm 2. What is the temperature of 0.460mol of gas at a pressure of 1.5atm and a volume of 12.8L
Determine the pH of each of the following solutions Part A. 8.3x10^-3 M phenol
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm3. What is the radius of the Platinum atom?
Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the concentration of Ca2 in this solution if [OH-] is somehow fixed at 4.90 × 10-6 M
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