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Lilit [14]
3 years ago
5

Which of these most likely indicates that a chemical change has happened? A. Spoiled milk gives off a strong oder. B. Candle wax

melts when it is heated. O C. Solid ice forms on a lake in winter. D. A guitar string vibrates when it is plucked.​
Chemistry
1 answer:
Doss [256]3 years ago
6 0

Answer:

B- Candle wax melts when it is heated.

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12 \: litres \: contain \: 3 \:  \: moles \: of \: sodium \: chloride \\ 1 \: litre \: will \: contain \:  \frac{(1 \times 3)}{12} moles \\  = 0.25 \: mol \:  {l}^{ - 1}  \\ or : 0.25 \: M

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