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Explain how many Joules of nutritional energy are in a bag of chips whose label reads 245 Cal? If 1 lb of fat is stored by the body for each 14.6 X 103KJ of excess nutritional energy consumed, how many bags of chips contain enough nutritional energy to result in 1 lb of body fat?
Explain what is the final temperature of the solution. Presume that the densities and specific heats of the solutions are the same as for water 1.00 g/mL and 4.184 J/g•°C, respectively. Use -56.2 kJ/mol for heat of neutralization.
If 23.13 g of Al at 337.0oC is added to 157.9 g of water at 25.4oC, what is the final temperature (oC) of the mixture?
If you have the compound Na^2[TaF^7], how do you determine the charge of the cation for the transition metal. In this case, Ta (Tantalum) is the transition metal.
Calculate the change in pH when 7.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Using the original buffer solution,
What is the equilibrium constant for the acid-base reaction between ammonia and acetic acid
If 50.0 of ethanol (density 0.789g/mL) initially at 6.0 is mixed with 50.0 of water initially at 28.2 in an insulated beaker, and assuming that no heat is lost, what is the final temperature of the mixture?
Cycloprpane decomposes in a first-order reaction at 500 C If the cyclopropane concentration is .670 M at the start of the reaction and is .367 M after 900 s, what is the rate constant for the reaction
For each of the following pairs of elements state whether the binary compound they form is likely to be ionic or covalent as well as write the empirical formula and name of compound
Gallium-67 is used in nuclear medicine. After treatment, a patient's blood gave a radioactivity of 20,000 counts per minute (counts/min). How long would it be counts before the activity decreased to about 5000 counts/min
solid ammonium carbonate nh4co2nh2 decomposes at 25 degrees c to ammonia and carbon dioxide.nbspthe equilbrium constant
how much sodium hydroxide must be added to a sample of seawater to completely precipitate 89.2 mg of magnesium ions present?
Which is predicted to be the most ionic substance?
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