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Suppose 50.0 mL of 0.250 M CoCl2 solution is added to 25.0 mL of 0.350 M NiCl2 solution. Calculate the concentration, in moles per liter, of each of the ions present after mixing. Assume that the volumes are additive.
The greater volume per mole at the higher temperature indicates greater average intermolecular distances and hence weaker intermolecular forces.
How much Tris (1.0 M) (MW: 121.1 g/mol) and EDTA (0.2M) (MW: 372.2 ) solutions are used to prepare a 100ml of TE buffer (10mM Tris and 1mM EDTA)
For a zero order chemical reaction, the A. half life period is directly proportion to the initial concentration of the reac-tants. B. plot of products concentration with time is a straight line through the origin
Determine the mass in grams of Ni in the original sample? Determine the weight percent of Ni in the sample?
A certain first-order reaction has a rate constant of 1.00x10-3 s-1. How long will it take for the reactant concentration to drop to 1/8 of its initial value?
HNO3 by mass and has a density of 1.047 g/mL. What is the pH?
An injection containing 10.0pg 10 5 B was injected into a patient suffering from a brain tumor. The patient was irradiated by a neutron gun at the site of the tumor.
The pressure in a sealed plastic container is 108 kPa at 41C. What is the pressure when the temperature drops to 22C? Assume that the volume has not changed.
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/t (in K ) is linear and has a slope of ?1.13×10^4 K.
Bradykinin is a nonapeptide that is responsible for the severe pain most people feel after being stung by a wasp. Amino acid analysis of bradykinin gave the following composition of amino acids:
When the gas is not flowing the pressure is the same everywhere in the pipe. How high above the bottom of the manometer would the mercury be in the am connected to the pipe?
Would the pH of a 0.10 M formic acid (HCOOH) solution be higher or lower than the pH of a solution containing 0.10 M formic acid and 0.10 M sodium formate
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