Metal mercury at room temperature is a liquid. Its melting point is -39°C. The freezing point of alcohol is-114°C. How much warmer is the melting point of mercury than the freezing point of alcohol?
A. - 750C C. 750C
B. - 1530C D. 1530C
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A .....................good morning
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Does it feel boiling hot to you today or is it just me? And how we can tell? If I say today's hotter than yesterday and you disagree, how can we settle the argument? One easy way is to measure the temperature with a thermometer on both days and compare the readings. Thermometers are simple scientific instruments based on the idea that metals change their behavior in a very precise way as they get hotter (gain more heat energy). Let's take a closer look at how these handy gadgets work.
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