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Calcium’s atomic number is 20. it forms ions with 18 electrons. what is the electrical charge of a calcium ion?
Answers: 2
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Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %
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Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17
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Chemistry, 22.06.2019 15:00, levelebeasley1
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.
Answers: 2
Calcium’s atomic number is 20. it forms ions with 18 electrons. what is the electrical charge of a c...
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