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A polonium parent having 84 protons as well as 130 neutrons undergoes a series of three radioactive decays, one β decay and two α decays. Explain what is the name and symbol for the daughter species that results from this decay?
write the rate law for each elementary reaction in the mechanism. D) if the first step is slow and the second one is fast, what rate law do you expect to be observed for the overall reaction.
Balance the following redox equation using the smallest integers possible and select the correct coefficient for the Mn2+. Mn(s) + Cr2O72-(aq) + H+(aq) ? Mn2+(aq) + Cr3+(aq) + H2O(l)
The combustion of oxalis acid in a bomb calorimeter yields 2816 J g^-1 at 25 degrees Celsius. Calculate a) Delta (c) U degrees and b) Delta (c) H degrees
A specific brand of gourmet chocolate candy contains 7.00 g of dietary fat in each 22.7 g piece. How many kilograms of dietary fat are in a box containing 3.00 lb of candy? Express your answer numerically in kilograms.
Determine the quantity of unknown protein that has an absorbance of 0.227 when a blank has an absorbance of 0.081. The previously determined calibration curve has the form of a straight line with the equation A = 0.0182 × m 0.007
if 30.15 ml of 0.0995 M naoh is required to neutralize 0.216 g of an unknown acid, HA, what is the molecular weight of the unknown acid
You are expected to design a car that works with photovoltaic panels. Assume that the driver is 75kg and the expected speed is 50km/hr.
an average man requires about 2.00mg of vitamin b2 per day. how many pounds of cheese would a man have to eat per day
A 7.50 g piece of iron at 100 C is dropped into 25.0g of water at 22.0 C. Assuming that the heat is lost by the iron equals the heat gained by the water, determine the final temperature of the iron/water system. Assume a heat capacity of water 4.1..
Hydrolysis of the compound B5H9 forms boric acid, H3BO3. Fusion of boric acid with sodium oxide forms a borate salt, Na2BO7. Without writing complete equations, find the mass (in grams) of B5H9 required to form 156g of the borate salt by this reac..
Explain the purpose of adding 6 M HCl to the aqueous layer with sodium benzoate. Draw the reaction between sodium benzoate and HCl.
Compute the molar concentrations of these gases under conditions typical of (a) the mid-latitude troposphere (10°C and 1.0 atm) and (b) the Antarctic stratosphere (200 K and 0.050 atm).
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