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Questions in chemistry

[Done] Besides glycerol, what three other molecules make up a triglyceride?

[Done] The first astronauts to travel to distant stars might use what to achieve light speed instead of engines?

[Done] Can you give examples of carbon in our nonliving environment?

[Done] Nitrogen gas (\(N_2\)) and hydrogen gas (\(H_2\)) combine to form ammonia (\(NH_3\)). Which equation correctly represents this reaction? A. \(N + H \rightarrow NH\) B. \(2N_2 + H_2 \rightarrow 3NH_3\) C. \(2NH \rightarrow N + 3H_2\) D. \(N_2 + 3H_2 \rightarrow 2NH_3\)

[Done] Can you identify the fourth most abundant element in the universe?

[Done] What is one result of a chemical change? A. Energy is created. B. A new material is formed. C. Materials change from one state to another. D. Elements are permanently destroyed.

[Done] Calcium oxide (CaO) forms when an atom of calcium loses two electrons, giving it a +2 charge, and an atom of oxygen picks up two electrons, giving it a -2 charge. What is calcium oxide? A. An element B. A covalently bonded compound C. An ionically bonded compound

[Done] What does each of the facts shown above tell you about the element on the periodic table?

[Done] Which type of energy is associated with the random motion of atoms and molecules in a sample of air? 1. chemical energy 2. electrical energy 3. nuclear energy 4. thermal energy

[Done] While your finger is still pushing the coin, there are four forces acting on the coin. What are they?