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How many hydrogen ATOMS are needed to produce 2 water (H2O) molecules? HINT: ATOMS not molecules
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Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
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What does a numerical subscript following an element in a chemical formula mean?
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What is bromine+calcium iodide--> calcium bromide +iodine balanced
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How many hydrogen ATOMS are needed to produce 2 water (H2O) molecules? HINT: ATOMS not molecules
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