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A 250 gram sample of water at the boiling point had 64.0 kJ of heat added. How many grams of water were vaporized? Heat of vaporization for water is 40.6 kJ/mole
At a particular temperature and 2.00x10^-2 M, concentration versus time data were collected for the reaction, and a plot of the natural log versus time resulted in a straight line with slope value of -2.97x10^-2 min^-1. Determine the rate law, int..
I need help in describing the adverse effects caused by exposure to radiation. Include some specific exposure levels associated with these significant health effects.
A United Nations toxicologist studying the properties of mustard gas, S(CH2CH2Cl)2, a blistering agent used in warfare, prepares a mixture
Calculate the [SCN] solution A, where 5.3 mL of 1.9x10^-3 M NaSCN is diluted to 42.0 mL with 0.1 M Fe(NO3)3. Next calculate the [FeSCN2+] in the solutions prepared by diluting volumes of solution A with 0.1 M Fe(NO3)3 to a final volume of 1.0101 mL..
In the electron transport chain, electrons from FADH2 are eventually used to reduce O2 into H2O. Experimentally, the proton motive force created by this process will generate 2 ATP molecules from ADP and Pi, using ATP synthase. From the informatio..
emitted into the atmosphere. The half-life of krypton-85 is 10.76 years. What fraction remains after 25 years?
calculate the number of molecules present in each of the following samples.
A 0.682 g sample of an unknown weak monoprotic organic acid, HA was dissolved in sufficient water to make 50 milliliters of solution and was titrated with a 0.135 molar NaOH solution.
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20.0 degrees Celsius and 9.95 times ten to the fourth Pa. What is the volume of the air at STP that an individual bre..
would bromine be a more or less effective disinfectant and bleaching agent than chlorine
you have 505ml of a .170m HCL solution and you want to dilute it to exactly .100M. how much water should you add?
Calculate the heat released when 156 g of water at 23.0 degrees celcius is convered to ice at -10.0 degrees celcius
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