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At a distance of 42 ft , an ionizing radiation source delivers 7.0 rem of radiation. How close could you get to the source and still have no biological effects?
To obtain the same antifreeze protection requires 76 g of propylene glycol to replace each 62 g of ethylene glycol. Calculate the mass of propylene glycol required to replace
A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure (in torr) of each gas in the mixture.C
draw all constitutional isomers of c3h6o. for each of the constitutional isomers show possible stereoisomers. are the
If an ideal gas has a pressure of 8.79 atm, a temperature of 19.18 °C, and has a volume of 19.91 L, how many moles of gas are in the sample
Write the electron configuration of selenium. List the following compounds in order of increasing lattice energy: NaCl, NaBr, MgO, CaO.
Problem- Using the appropriate Ksp values, find the concentration of K+ ions in the solution at equilibrium after 500 mL of 0.40 M aqueous Cu(NO3)2 solution has been mixed with 350 mL of 0.20 M aqueous KOH solution. (Enter in M.) (Ksp for Cu(OH)2 ..
The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with l-fluoro-2,4-dinitrobenzene (FDNB). When the resulting compound is heated to 110oC for 24 h in the presence of 6 M HCl, the solution will contain
A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In the next lab
A bicycle tire is filled with air to a pressure of 75. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What ..
At 25 °C and 765 Torr, carbon dioxide has a solubility of 0.0342 M in water. What is its solubility at 25 °C and 1470 Torr
calculate the value for E for the cell at 25oC (b) A current is drawn from the cell until 1.20 g of silver have been deposited at the silver electrode. Calculate the value of E for the cell at that stage of operation.
If the entropy of a collection of molecules in 50,000 boxes is 3.73E-20 J/K, how many molecules are there
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