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Which of the hypotheses regarding primate evolution do you think is most plausible (arboreal, visual predation, angiosperm exploitation)? Give one argument of the theory and one reason.
A piston has an external pressure of 6.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.580 liters.
In the winter time, it is common to sprinkle NaCl on icy roads and driveways. Why is this done? Would calcium chloride be more or less effective
What is the initial mole of Aniline? what is the initial mole oh HNO3 if 40mL of the acid was used in the titration
These compounds react to give nitrogengas N2 and water vapor, evolving 1049 kJ of heat atconstant pressure when 1 mol of N2O4 reacts. Write the balanced thermochemical equation for this reaction.
Compare the amount of A extracted by two extractions using 50 mL of diethyl ether each to the amount extracted by a single 100 mL extraction of the ether. Which is more efficient?
A spring with spring constant 72 N/m has one end attached to a peg on a horizontal surface, and another attached to a puck with mass of 0.34 kg
From (1gC12H22CuO14) / (453.84C12H22CuO14 g/mol) x (1molC12H22CuO14 / 1molC12H22CuO14) x (63.55cu/mol) = 0.14gCu , is the final answer.
A gas has a mass of 0.305 g, volume of 25 ml at 2 ATM and 0 degrees Celsius. The gas consists of bromine and fluorine. What is the molecular weight and the chemical formula
Presume a .250 L sample of vinegar had an acetic acid concentration of .850 M. Explain how many moles of acetic acid would be present in the solution
emitted into the atmosphere. The half-life of krypton-85 is 10.76 years. What fraction remains after 25 years?
Calculate the ionic strength of a solution that is made .1222 M AgNO3, plus .0215 M MgCl2, plus .140 M AlCl3
Assume the total heat capacity of the air C air=30 J/K. Describe what's the likely ice will ne after the system reaches equilibrium. b) Estimate theliekly final temperature after reaching equilibrium
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