14. Which of the following will result in a chemical change? A. Melting ice to obtain water
B. Evaporating alcohol into vapor
C. Burning coal in a furnace
D. Drying wood in a shed

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What is the formula of the ionic compound composed of calcium cations and chloride anions

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If a computer chip switches off -on-off in 0.015 us, what is the switching time in nanoseconds?