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Though not strictly equivalent, there is a similar uncertainty relationship between the observables time and energy. In emission spectroscopy, the width of lines (which gives a measure of in a spectrum can be related to the lifetime (that is, ?t) of the excited state. If the width of a spectral line of a certain electronic transition is 1.00 cm-1, what is the minimum uncertainty in the lifetime of the transition?
What is the simplest formula for Chalcocite if a sample of this ore contains 8.274 g copper and 2.088 g sulfur?
What mass of F2 is needed to produce 205 g of PF3 if the reaction has a 79.3% yield?
If 20.0mL of 0.00200 M Fe(NO3)3 is diluted to 50.0mL, what is the concentration of Fe+3 in the diluted solution?
Solubility of calcite (CaCO3) will increase with a decrease in temperature and decrease with an increase in temperature. This is because the solubility of calcite is dependent on the solubility of CO2.
Data for the decomposition of hydrogen peroxide at some set temperature T is include below. The rate law depends only on the concentration of H2O2.
find out the molecular formula and empirical of this compound and determined to contain 4.36 grams of phosphorus and 5.64 grams of oxygen
The manometer shown below measures the pressure of the water in the tank. Using variables for the densities (no values given), find the gage pressure at point A.
Write the structures of the saytzeff elimination
You use a properly calibrated explosimeter to measure the flammable hazard inside a tank that contained toluene and may still have some residual product a. inside.
A compound of forumula C14H12 gave a positive Baeyer test and burned with a yellow, sooty flame. Treatment with ozone followed by hydrolysis in the presence of zinc gave formaldehyde as one of the products.
a sample of a certain beverage contains 1.00g of tartaric acid, H2C4H4O6. The beverage is titrated with 0.100M NaOH, how many millimeters of base are required to neutralize the tartaric acid.
Calculate the solubility of Ni(OH)2 in a) distilled water and b) at pH of 4.0. Justify your answer. I know I need to use a mass balance ans the reaction for disolution is
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