17. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation below. 226 88 Ra 18. Designate the atom shown in Question 17 in the form "name of element" - "mass number". 19. How many protons, neutrons, and electrons are in the atom described in questions 17 and 18?

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Q: can you answer the other sub parts

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Q: 18. Calculate the mass of 0.467 moles of CaBr2

A: Number of moles of CaBr2 = 0.467 moles Molar mass of CaBr2 = 1 x Ca + 2 x Br = 1 x 40.08 + 2 x 79.91…

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Q: For the following questions do not include units in the answer. Consider 5.34 g ammonium sulfide…

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Q: What is the difference between a rapid precipitation and recrystallization?

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A: ∆rH = Sum of enthalpies of products - Sum of enthalpies of reactants  ∆H = ∆U - ∆n(g)RT  ∆n(g) = Sum…

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A:

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Q: Draw the product of the E2 reaction shown below. Ignore any inorganic byproducts. Br Draw the E2…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.