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Radon (Rn) has a mass number of 222 and an atomic number of 86 and decays by emission of an alpha particle. The product of this decay is
radium (Ra), with a mass number of 226 and an atomic number of 88. polonium (Po), with a mass number of 218 and an atomic number of 84. lead (Pb), with a mass number of 210 and an atomic number of 82. gold (Au), with a mass number of 212 and an atomic number of 79. astatine (At), with a mass number of 211 and an atomic number of 85.
Tin (Sn), with a mass number of 126 and an atomic number of 50, decays by beta emission. Identify the product of the nuclear reaction by providing its atomic symbol , mass number , and atomic number
fluride ion is poisonous in relatively low amounts. 0.2 g of F per 70 kg of body weight cause death . nevertheless, inorder to drinking water at a cencetration of 1 mg of F ion per L of water
How many moles contain each of the following?
octane has a density of 0.692g/ml at 20C. How many grams of O2 are required to burn 30.5 gal of C8H18
At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In which of them is no work done?
Determine the empirical formula for a substance with the following composition
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
According to the following reaction, how many grams of ethylene (C2H4) are required for the complete reaction of 23.8 grams of hydrogen gas?
a solution of NaOH is added to the supnatant liquid until it is strongly alkaline. No precipitate is formed. Which ions are present in each of the precipitates. Which cations are not present in the original solution?
A 0.0050 molar solution of sugar is separated from pure water by a membrane at 20 C. What is the osmotic pressure?
In the borohydride reduction of camphor, the two end products were borneol and isoborneol.
If 0.214 mol of argon gas occupies a volume of 652 mL at a particular temperature and pressure, what volume would 0.375 mol of argon occupy under the same conditions?
If 18.26 grams of sulfuric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced at STP?
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