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The absorbance at 540 nm of 1mM solution of cyanmethemoglobin is 11.0. What is the concentration of cyanmenthemoglobin solution whose absorbance in a 1mm cell is 0.690.
A proton in a linear accelerator has a de Broglie wavelength of 127 pm. what is the speed of the proton?
if 69.5 kj of heat is applied to a 1040. g block of metal the temperature of the metal increases by 11.4degc. calculate
Balance the following molecular equations for these reactions. Write the ionic equation for the reactions. Write the net ionic equation for the reactions.
this and the next question pertain to the following situation.a quantity of molecular hydrogen h2 gas fills a one liter
A quantity of ice at 0°C is added to 66.4 g of water in a glass at 55°C. After the ice melted, the temperature of the water in the glass was 15°C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(..
Explain how many stereoisomers are probable for each of the following structures. Draw them and name each by the R-S and E-Z conventions. A. 4-methyl-2, 5-heptadiene B. 1, 2, 5-trichloro-3-hexene.
If a buffer is made up to be 1.0M in acetic acid and 1.0 M in sodium acetate, predict how much acid will be required to change the pH of 100mL of the buffer by 0.1 pH units.
Predict the number of chemically shifted H(1) peaks and the multiplet splitting of each peak that you would observe for bromoethane
Which of the following is a correct neutralization reaction?
determine how much water is formed if 30000 grams of c2h2 acetylene burns completely?determine how much heat energy is
Barbituric acid (ka = 1.1x10^-4) is used in the manufacture of some sedatives. For a 0.6733 M solution of barbituric acid, calculate
If the ka for the acid phenol (call it HP) is 1.3 x 10-10, what is the pka of the phenolate ion (P-)
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