Physics

Physics, 18.07.2019 07:50, sslider

Radon is the heaviest naturally radioactive gas. a) noble b) halogen c) group 1 d) diatomic

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Chemistry, 14.07.2019 20:30, Maddy1212

Radon is a naturally occurring radioactive gas. it is on of the products produce as uranium decays. radon has a half-life of approximately 4 days. if you have a sample of radon with a mass of 4 grams, how many grams will be left at the end of 8 days? (a) 4 (b) 2 (c) 1 (d) none of these

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Chemistry, 29.07.2019 13:30, aurelio1121

Radon (rn) is the heaviest and the only radioactive member of group 8a(18), the noble gases. it is a product of the disintegration of heavier radioactive nuclei found in minute concentrations in many common rocks used for building and construction. in recent years, health concerns about the cancers caused from inhaled residential radon have grown. if 1.00 × 1015 atoms of radium (ra) produce an average of 1.373 × 104 atoms of rn per second, how many liters of rn, measured at stp, are produced per day by 9.64 g of ra?

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Physics, 04.08.2019 15:30, Jade2209

Lithium fluoride is used as a flux in the production of ceramics and glazes. given their location on the periodic table, identify the ionic charge for each element and predict the chemical formula of the compound formed. a) lithium, li, is an alkali metal and is in group ia with an ionic charge of +1. while fluorine, f, is a halogen and is in group viia with a charge of -1. these will form lif(s). b) lithium, li, is an alkaline earth metal and is in group ia with an ionic charge of +2. while fluorine, f, is a halogen and is in group viia with a charge of -1. these will form lif2(s). eliminate c) lithium, li, is an alkaline earth metal and is in group ia with an ionic charge of +2. while fluorine, f, is a noble gas and is in group via with a charge of -2. these will form li2f2(s). d) lithium, li, is an alkaline earth metal and is in group ia with an ionic charge of +1. while fluorine, f, is a diatomic gas and is in group via with a charge of -2. these will form li2f(s).

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Chemistry, 10.10.2019 18:00, hdamelis30

Be sure to answer all parts. radon (rn) is the heaviest and the only radioactive member of group 8a(18), the noble gases. it is a product of the disintegration of heavier radioactive nuclei found in minute concentrations in many common rocks used for building and construction. in recent years, health concerns about the cancers caused from inhaled residential radon have grown. if 1.00 × 1015 atoms of radium (ra) produce an average of 1.373 × 104 atoms of rn per second, how many liters of rn, measured at stp, are produced per day by 1.08 g of ra?

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