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A cylinder contains 12.0l of air at a total pressure of 41.4psi and a temperature of 30c. How many moles of gas does the cylinder contain?
The specific rotation of the pure R-enantiomer of a compund is +80 degrees. What is the composition of R- and S-enantiomers in a mixture
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
how do you calculate the H+ in the following solution: [OH-] = 3.44 x 10-1 - need the steps please.
Barium sulfate is used clinically to provide x-ray images of the digestive tract. How might barium sulfate be prepared in the laboratory from a double-displacement reaction of an ionic nitrate compound and sodium sulfate?
A solid that weighs 0.008kg . Put the solid into a gradulated cyliner filled with water and the volume increases by 10cm 3 what is the denity?
The activation energy of a certain reaction is 45.3kJ/mol . At 24{~}^{\circ}\rm C , the rate constant is 0.0160s^{-1} . At what temperature in degrees Celsius would this reaction go twice as fast?
a solution contains 55 grams of ascorbic acid in 250 g of water freezes at -2.34 degrees C. calculate the molar mass of the solute
A stock solution is prepared by adding 22 mL of 1 M Na3PO4 to enough water to make 73 mL. What is the PO43- concentration of 30 mL of the stock solution?
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below
kinetic energy of 7070 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?
The molecular weight of vincristine, a pharmaceutical drug, is 923.04. It is supplied in 1 mg per vial. You want to treat your culture cells with a final concentration of 5 hM vincristine and will need 30 ml of cells for your experiment
Rank the following bonds from strongest to weakest and provide the bond energy: the bond between hydrogen and oxygen in a water molecule, the bond between sodium and chloride in the NaCl molecule
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