Chemistry, 01.10.2019 03:20 Hcalhoun21
What is the empirical formula of stannous fluoride, the first fluoride compound added to toothpaste to protect teeth against decay? its mass percent composition is 24.25% f, 75.75% sn. express your answer as a chemical formula.
Answers: 2
Chemistry, 22.06.2019 19:40
Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory
Answers: 3
Chemistry, 23.06.2019 10:30
How is it possible for someone to put an ear to a wall and hear someone in the next room? a.sound waves can travel though solids. b.the waves travel from room to room via air. c.there must be some air in the wall so the sound can travel through it. d.sound waves change to electromagnetic waves and then back again.
Answers: 1
What is the empirical formula of stannous fluoride, the first fluoride compound added to toothpaste...
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