Which of the following best defines one mole of a substance? (5 points) Mass, in grams, of each particle of the substance
Mass, in grams, of the nucleus of the substance's atoms
Amount of substance present in one atom of the substance
Amount of substance present in Avogadro's number of particles of the substance

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h

How does a noncompetitive inhibitor reduce an enzyme’s activity?