Chemistry, 13.10.2019 07:01 atlantahead7011
Which statement about atoms of elements in the same group of the periodic table is true?
they have similar chemical properties and the same number of valence electrons. they have the same number of protons and the same mass.
they have the same number of energy levels and the same amount of reactivity. they have the same number of electrons and the same atomic radius size.
Answers: 1
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Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?
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Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775
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Chemistry, 23.06.2019 05:30
For the reaction i2(g)+br2(g)โโโ2ibr(g), kc=280 at 150 โc. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 โc. what is the equilibrium concentration of 2ibr, i2, br2
Answers: 1
Which statement about atoms of elements in the same group of the periodic table is true?
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