Chemistry, 20.12.2019 19:31 trmcswain03
Copper can be found as a free metal, but most often it is found in a compound with sulfur, such as cus (covellite) or cu2s (chalcocite). 1. these ores often are heated with oxygen to change them to copper oxides. sulfur dioxide gas also is formed. write a balanced chemical equation for this reaction for each of the copper sulfides.
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The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?
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When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
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Copper can be found as a free metal, but most often it is found in a compound with sulfur, such as c...
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