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Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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Chemistry, 22.06.2019 19:00
Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.
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How many l of a .05 m hcl solution can be made by diluting 250 ml of 10 m hcl...
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