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If the atom 213/ 82Pb undergoes decay by emitting two beta particles and an alpha particle, the atom's new identity is: 1) Platinum-209 2) Mercury-211 3) Lead-209 4) Lead-211
how many equivalents of KBr moles of 0.00416 relative to acetanilide moles of 0.00381 are used in this reaction
Suppose that 0.570 mol of methane is reacted with 0.720 mol of fluorine forming CF4(g) and HF(g) as sole products.
if 114 kilo joule is given off per mole of ethylene reacting determine how much heat is released when 14.8 kilo grams
which of the following aqueous solutions will freeze at the lowest temperature? a. 0.10 m KCl, b. 0.20 m C6H12O6 (glucose), c. 0.050 m AlCl3, d. 0.15 m SrBr2, e. all of the above freeze at the same temperature
The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray
What is the nuclear binding energy per mole if the mass defect of a certain isotope is 0.4941 u per atom or 0.4941 g per mol? Express your answer in joules.
the solubility of a salt in water represents the amount of solute necessary to reach a state of equilibrium between saturated solution and undissolved
the ferrous ion fe2aq reacts with the permanganate ion mno4- aq in an acidic solution to produce the ferric ion fe3aq.
How many milliliters of 0.121 M H2SO4 are needed to neutralize 0.220g of NaOH? If 42.5mL of 0.220 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of Ca(OH)2 must be in the solution?
The wavelength of light emitted if the electron drops from n=5 to n=4 will be shorter than the wavelength of light emitted when the electron falls from n=5 to n=3.
Norborneol synthesis in this manner is stereoselective. So, there are two possible products one endo and one exo. Only one will form, but why aren't there actually four possible products since the alcohol can form on either carbon in the alkene?
a pound of coffee beans yields 70 cups of coffee (4cups=1qt) how many milliliters of coffee can be obtained from 1 g of coffee beans
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