Chemistry, 16.12.2021 17:50 whityelaine7997
Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction. In this reaction, all of the copper and all of the sulfur react. Before running the experiment, the scientist expected the products of the reaction will be a total of 15.9 grams of copper sulfide (Cu2S). What scientific law explains why his prediction will be correct?
A. The Law of Conservation of Matter
B. The Law of Conservation of Energy
C. The Law of Conservation of Motion
D. The Theory of Gravity
Answers: 3
Chemistry, 21.06.2019 23:00, cami30031cami3003
Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.
Answers: 2
Chemistry, 22.06.2019 12:00, daytonalive83481
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
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