The specific heat of mercury is 380 j/kg/k. how much energy is required to raise the temperature of 42g of mercury from 25°c to 39°c?

show work and or explain
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As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

0.09 moles of sodium sulfate in 12 ml of solution

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent