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At a resting pulse rate of 75 beats per minute, the human heart typically pumps about 65 ml of blood per beat. Blood has a density of 1060 kg/m^3. Circulating all of the blood in the body through the heart takes about 1 minute for a person at rest.
1.) Explain how much blood is in the body?
2.) On average, define what mass of blood does the heart pump with each heart beat?
Draw the kekule structure of each of the following compounds. if cis/trans isomers exist, draw both and indicate the geometry of each. Also draw the structure of a constitutional isomer.
What is the heat of vaporization(kJ/mol) if it takes 3,452 J of heat to completely vaporize 2.68 moles of the liquid at its boiling point
Explain milk sours in about 20h at 28 degrees Celsius. Stored in a refrigerator at degrees Celsius, milk sours in about 10 days. Explain what is the activation energy for souring of milk
When electrons in a molecule are not found between a pair of atoms but move throughout the molecule, this is called
If an empty beaker has a mass of 129.3 grams. Subsequent to some chemical has been added the mass is 146.653 grams. Explain how much of the chemical was added use the proper number of significant figures
The following reaction takes place in a sealed 40.0-L container at a temp of 120 degrees C 4NH 3(G) + 5 O2 (g) --> 4NO (g) + 6H2O (G)
a sample of chloroform is found to contain 11.3 g of carbon 100.2 g of chlorine and 0.95 g of hydrogen. if a second
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
What mass of sulfamic acid (H2NSO3H) will you need to use in order that the titration will require 40.00 mL of the NaOH solution
A gas expands and does P-V work on the surroundings equal to 259 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?
The method used in this experiment is sometimes called the vapor density method. Beginning with ideal gas equation, show how the density of a vapor may be determined by this method.
A canister with a volume of 694 L contains how many moles of oxygen at STP. A chemical reaction produces 138 mol of HBr gas. What volume will that gas occupy at STP
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