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If a graduated cylinder contains 155 g of water a 11.0 g piece of iron (density = 7.86 g/cm3) and a 16.0 g piece of lead are added. Explain what is the new water level in the cylinder?
Show the electron configuration of phosphorus, P . Be sure to arrange the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
A sample with a concentration of 0.240 M has an absorbance of 0.34 in a 1.0 cm path length cuvet. What would be the absorbance expected if a) the sample is diluted to a concentration of 0.120 M and b) if the path length with the original solution ..
2.55 g of an unknown gas at 39 degrees celsius and 1.05 atm is stored in a 1.95-L flask. What is the density of the gas in L and the molar mass of the gas in g/mol
Calculate the cell potential for the following reaction as written at 61 °C, given that [Cr2 ] = 0.826 M and [Ni2 ] = 0.0200 M. Cr(s) + Ni ^2+ (aq) --> Cr^2+ (aq) + Ni(s)
The pressure of the He at 25 degrees celsius is 145 mmHg. The bulb is then heated to 325 degrees celsius and all the (NH4)2 S decomposes to form NH3 and H2S, with a resulting total gas pressure of 875 mmHG. What is the partial pressure of the NH3 ..
At 20 0C and 35 bar pressure, ethane exists as both a liquid and a gas. Use the Redlich-Kwong equation to determine the molar density of the liquid and the gas under these conditions
Which compound accepts electrons from NADH, producing a compound that can pass through the inner membrane?
what is the energy uncertainty associated with a short pulse of laser light that lasts 4.8fs
How many grams of ethanol (C2H5OH) (MW C2H5OH= 46.07 g/mol) would have to be burned to produce 450 kJ of heat
What mass of Na2CrO4 is required to precipitate all the silver ions from 96.0 mL of a 0.650 M solution of AgNO3
The activation energy for a reaction is 55.5 kj/mol. if the rate constant for the reaction has a value of 1.35 * 10^2 s^-1 at 25 degrees Celsius what will it be at 95 degrees Celsius
what are the differences in the type of inhibition caused by heat, acid or base, and heavy metal ions on enzyme activity?
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