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How many kilojoules are needed to raise the temperature of 325 g of water from 15.0C to 77.0C? How many kilojoules are needed to raise the temperature of 325 g of water from 15.5C to 77.5C?
the enzyme acetylcholinesterase,which has a turnover rate of 25,000 s-1. Calculate how long it takes the enzyme to cleave one acetylcholine molecule.
we are doing an analysis of cola lab in my chem I lab. We have to do pre-lab questions and one of them is- how will you use compounds of different colors to determine the relationship between percet transmittance and wavelength? or between absorba..
Research in surface science is carried out using ultra?high vacuum chambers that can sustain pressures as low as 10?12 torr. How many molecules are there in 1.00 cm3 volume inside such an apparatus at 298 K? What is the corresponding molar volume ..
If you have 100ml of a .1M tris buffer at PH 8.3 and you add 3.0 ml HCl what will be the new pH? (PKa of Tris = 8.3)
the piston of an internal combustion engine compresses 434 ml of gas. the final pressure is 15 times greater than the
Write a balanced chemical reaction for photosynthesis (accounting for both the light and dark reactions). Compare the pathways of photosynthesis and oxidative phosphorylation.
What is the total anion concentration (in mEq/L) of a solution that contains 6.0 mEq/L Na+, 13.0 mEq/L Ca+
When 4.70 g of a nonelectrolyte solute is dissolved in 915 mL of water at 21 degrees C, resulting solution exerts an osmotic pressure of 839 torr.
A 1.5618-g sample containing sulfate ion was treated with barium chloride reagent, and 0.2321 g of barium sulfate was isolated. Calculate the percentage of sulfate ion in the sample.
Isooctane (2,2,4-trimethylpentate), one of the many hydrocarbons that make up gasoline, burns in air to give water and carbon dioxide.
Provide proper IUPAC names for each compound below or draw structures corresponding to the lowest energy conformation. A. cis-1-fluoro-2-methylcyclopropane
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
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