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Question
What is the molarity of a solution with 9.05 grams of solute and a volume of 140.0 mL? The solute has a molar mass of 279.2 g/mol.
A dog sits 1.07 m from the center of a merry go-round with an angular speed of 1.44 rad/s. If the magnitude of the force that maintains the dog's circular motion is 41.2 N.
A water sample contains 118mg/L of bicarbonate ion, 19mg/L of carbonate ion, and has a pH of 9.5. What is the alkalinity of this water expressed as mg/L of CaCO3? Answer: 130mg/L as CaCO3.
The following mechanism for the gas phase decomposition of oxygen difluoride is consistent with the observed rate law.
The specific heats of solid, liquid and gaseous ethanol are 0.97, 2.3 and 1.9 J/g•K, respectively. How much heat must be added to a 115.5 g sample of solid ethanol initially at 77 K to raise the temperature to 300 K.
A 10.0 balloon contains gas at a pressure of 640 torr. What is the new pressure of the gas at the 22.0 liters volumes if there is no change in temperature.
1. What is the chromosome theory of inheritance? How does it explain Mendel's two laws?
Utilizing data to compute the nonstandard emf for each of the following reactions if the concentration of each of the ions in these reactions is 0.0002 molar as well as everything else is standard use 298 K for the temperature, R = 8.314 J/mol-K, ..
In the presence of of NH3, Cu^2+ forms the complex ion Cu(NH3)4^2+. Explain if the equilibrium concentrations of Cu^2+ and Cu(NH3)4^2+ are 1.8x10^-17M and 1.0x10^-3M, respectively, in a 1.5M NH3 solution, Compute the value for the overall constant..
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
the fragrance of apricots is due to the ester pentyl butanoate. write the equation for the synthesis of this ester
the combustion of octane c8h10 with molecular ocygen is an exothermic reaction that produces carbon diocide and water.
A 370. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 49°C.
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