A food item contains 160 nutritional calories. how many calories does the food item contain? given:

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In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

What metric units would you use to measure the thickness of a key

How many grams of phosphorus are contained in 5.09 moles of phosphorus?