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Warm Up – 1/25-26/17

A) Convert the following: 274.55 g sodium chloride to moles 3.88 x 1024 atoms iron to grams. B) Chromium metal reacts with oxygen gas to produce chromium(III) oxide.  Write the word equation, formula equation, and balance it.  

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Warm Up – 1/19-20/17

Convert the following: 42.86 g calcium to atoms 285.2 L of carbon dioxide gas to moles 2.05 moles copper(II) chloride to grams The mass of the empty crucible and lid was 28.25 g.  The mass of the crucible, lid, and … Continue reading

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Warm Up 10/20-21/16

Write the symbol of 2 elements from the following: Metalloids Inner-Transition Metals Alkali Metals Halogens Non-metals Transition Metals What is the definition of Atomic Radius?

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Warm Up – 8/30-31/16

Determine the number of significant figures in the following: 10.05 0.025 5.25 x 105 100.00 Determine the number of sig figs in the following calculations: 62.5 x 400.20 0.0047 / 295 1.38 + 2.958 210.23 – 29.1

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