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Problems

Problems. Calculate the atomic mass of magnesium based on the following information:. .7870 x 23.985 = 18.876195 .1013 x 24.986 = 2.5310818 .1117 x 25.983 = 2.9023011 Add them together: 18.876195 + 2.5310818 + 2.9023011 = 24.309578 How many significant figures should the answer have?.

martin-mitchell
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Problems

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  1. Problems

  2. Calculate the atomic mass of magnesium based on the following information:

  3. .7870 x 23.985 = 18.876195 • .1013 x 24.986 = 2.5310818 • .1117 x 25.983 = 2.9023011 • Add them together: • 18.876195 + 2.5310818 + 2.9023011 = 24.309578 • How many significant figures should the answer have?

  4. Try again with Uranium

  5. You should have gotten an answer of 238.029 amu • Convert 23.97 grams of potassium to moles.

  6. Convert 4.29 moles of carbon to grams.

  7. How many atoms of phosphorous are in a 2.76 gram sample?

  8. How many grams of sodium are there if you have 4.76 x 1023 atoms of sodium?

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