Chemistry, 16.03.2020 19:22 justyne2004
In an experiment, a student made a compund of sulfur and copper, and now she needs to find if the compound is copper (I) sulfide or copper (II) sulfide. She cannot physically identify the compound, so she performs a copper analysis, and finds that a 1.0440-gram sample of the compound contains 0.8383 grams of copper. What is the identity of the compund? (HINT: First determine the formulas of the two candidate compounds, and then the percent copper for each one.)
Answers: 3
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Which feature do highland climates have that lower elevation areas do not?
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Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
In an experiment, a student made a compund of sulfur and copper, and now she needs to find if the co...
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