Chemistry, 18.03.2021 04:40 danielajimenezowfsvp
If 1.00g of barium metal is heated in a stream of pure oxygen gas, 1.112 mg of an oxide is produced. Calculate the empirical formula of the oxide.
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Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.
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Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset
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Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
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If 1.00g of barium metal is heated in a stream of pure oxygen gas, 1.112 mg of an oxide is produced....
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