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Create a 5-step procedure you think will work to compare the efficiency of the light emitted by an incandescent light bulb to a fluorescent light bulb. Make sure to mention all the variables you think you'll have to control.
Calculate the molarity of the hydroxide ion (OH-) for this final mixture (51.5mL) Please do not tell me to do Y while leaving out X and Z
diluted to about 0.95 L of water. Calculate the approximate concentration of this solution.
what is the change in enthalpy for 2.854 moles of the liquid?
What would the atom ratio of 206Pb to238U be in a uranium mineral from a rock that is 1.0 × 10^9 years old? t1/2(238U)= 4.5 × 10^9 yr
You are titrating 150.0 mL of 0.070 M Ca2 with 0.070 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00. Calculate the concentration of Ca2 at V = 1/2 Ve. Calculate..
Calculate the mass of unknown solid required to prepare 100 mL of a solution that is 100 ppm in Ca by assuming that the sample contains 50 wt% CaCO3.
Hydrogen Sulfide gas has toxicity comparable to Hydrogen Cyanide, but because of its intense odor its presence is observed at concentrations well below toxic levels.
Calculate the change in chemical potential of the 12g of carbon dioxide after being completely released from the cartridge at room temperature.
in an industrial process nitrogen is heated to 400kelvin at a constant volume of 1m3.the gas enters a container at 300k and 100atm. the mass of the gas is 92.4kg. use the vander waals equation to determine the approximate pressure of gas
The pH of a solution containing equal concentrations of a weak acid and its salt is found to be 5.1. What is the Ka for this acid
Calculate the mass deficiency in amu, binding enery in J/atom, and binding energy in MeV/nucleon for zinc-64, with an actual mass of 63.9291 amu.
A sample containing 839g of water was cooled from 95°C to 27°C. How much heat was involved in this process? provide the answer in joules or kilojoules
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