Chemistry, 28.10.2019 00:43 princessroseee769
Which laboratory activities involve chemical changes? check all that apply.
a)leaving a copper penny in vinegar until it turns green
b)boiling saltwater for several minutes until only solid salt remains
c)extracting iron filings from a sand mixture using a magnet
d)crushing a rock with a hammer to extract mineral deposits
e)putting an iron nail outside for a month and observing changes
Answers: 2
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0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?
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You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use
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Give one example of a pure (exact) number and of an estimated (measured) number.
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The decimals you found in part b are called repeating decimals. in the gizmo, repeating decimals are rounded to two places. how does the gizmo show you that a decimal has been rounded?
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Which laboratory activities involve chemical changes? check all that apply.
a)leaving a...
a)leaving a...
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