Exam (elaborations)
Chem101 UPDATED Exam Questions and CORRECT Answers
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total number of neutrons and protons in an atom; # protons + # electrons Mass Number Most nonmetallic elements are found in which block of the periodic table? p Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Positive matter is concentrated in the central core Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? Potassium What is the ratio of reactants and products in the chemical equation? __NaOH + __H2SO4 --> __Na2SO4 + __H2O 2:1:1:2
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