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An average human produces 10 mJ of heat each day. if the human body were an isolated system of mass 45 kg with heat capacity of water, what temperature rise would the body experience?
a 0.6407g sample containing only chloride and iodide ions gave a silver precipitate weighing 0.4430g. this precipitate
In the formula Ca + 2 H2O ----> Ca (OH)2 +H2 Determine the number of atoms for each element in the reactants. Determine the number of atoms for each element in the products.
The density of an 40.0% w/w ethanol (C2H5OH) solution is 0.935 g/mL. What mass of ethanol does 225.0 mL of this solution contain
A commercial bleach solution contains 3.62 mass % NaOCl in water. Calculate the mole fraction.
A student following the procedure in this experiment prepared three solutions by adding 11.50, 23.00, and 34.50 mL of a 7.60 x 10-2M NaOH solution to 50.00 mL of a .112M solution of a weak acide. The solutions were labeled 1, 2, and 3 respectively
Yellowstone Lake has an area of 88,960 acres. How many liters of pure oleic acid (molecular mass = 282.5 and density = .895 g/ml) would be needed to cover this lake with a layer one molecule thick? Assume the oleic acid molecule occupies a cubic s..
What is the main component of the first eluting peak and what percentage of the total absorbance at 300nm is due to this component?(assuming the light path- length = 1.0 cm)
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria.
Problem- The restriction enzyme, Xho1, cuts phage (lambda) DNA at position 33,498. Draw a picture of the gel you will see if it is used as the mystery enzyme in the experiment.
Question- If calcium carbonate decomposes into calcium oxide and gaseous water, what is the delta S of the reaction?
how much of heat is gained by nickel when 500 g of nickel is warmed from 22.4 to 58.4C?
A gaseous mixture of rm O_2 and rm N_2 contains 36.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 485 mmHg?
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