Choose the following statements that show evidence for a chemical reaction.
1. dropping sodiu...
Choose the following statements that show evidence for a chemical reaction.
1. dropping sodium metal into water produces fizzing
2. dissolving a white powder in solution gives white light
3. mixing two aqueous solutions produces a precipitate
4. mixing two 10.0 ml solutions gives a volume of 19.5 ml
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Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:
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the mississippians were considered to be horticulturalists, which means they were
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State one important difference between a physical change and a chemical change?
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