The answer is basic solution
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High temperature and pressure produce the highest rate of reaction. However, this must be balanced with the high cost of the energy needed to maintain these conditions. Catalysts increase the rate of reaction without affecting the yield. This can help create processes which work well even at lower temperatures.
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the melting point of water is 32 degrees Fahrenheit , 0 degrees Celsius. <span />
The correct answer is A. Alkali metals.
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