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For the reaction A+B----->C, the rate law is rate=k[A]. If the initial concentration of A=2.5 mol/L, the initial [B]=1.4 mol/L, and the rate =0.29 moles of product per liter per minute (M/min).Calculate the rate constant K to 2 decimal places.
The pKa's of benzoic acid and 4-nitroanilinium hydrochloride are 4.2 and 1.0, respectively.
The element lithium has two naturally occurring isotopes, 7Li (isotopic mass 7.0160 amu, abundance 92.5 %) and 6Li (isotopic mass 6.0151 amu, abundance 7.50 %). Calculate the atomic mass of lithium.
A physician treating a patient with megaloblastic anemia might be tempted to treat the patient with folic acid to see if a simple folate deficieny is involved.
Suppose a student is measuring the optical rotation of a 1 M sample of (S)-(-)- Limonene. The path length is 13cm. What optical rotation should the student expect to measure?
Assuming 100% dissociation, calculate the freezing point and boiling point of 2.72 m AgNO3(aq).
Indicate whether or not, each has a fixed shape or fixed volume. In addition, include their relative kinetic energies. Pictures can be drawn to assist in the explanation.
A weak acid (HA) has a pKa of 4.303. If a solution of this acid has a pH of 4.990, what percentage of the acid is not ionized? (Assume all H in solution came from the ionization of HA.)
The melting point of water is 0.000C at 1 atmosphere. If 11.64 grams of chromium(II) acetate, (170.1 g/mol), are dissolved in 287.2 grams of water .what is the molarity?
Consider the six pz orbitals on carbon atoms (the pi system) of the benzene molecule (D6h symmetry). These may be treated as vector arrows pointing vertically above the plane of the six-membered ring.
A sample of oxygen that occupies 2.5 × 10-6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the final vol ume of the sample be if the temperature is held constant?
Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each {rm Al} atom has a radius of 1.43 {rm AA}, what is the length of a side of the unit cell?
a ball is thrown verticall downward with an initial speed 11.3 m from a roof of a building 39.0m above the ground .how long doest it take to reach the ground? what is its speed of impact?
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