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Which of the following is a physical change? a. corrosion b. explosion c. evaporation d. food spoilage
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Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10Γ1010). if her stock has a good year and gains $3.20 billion (3.20Γ109) in value, what is her new net worth?
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How many neutrons does an element have if its atomic number is 50 and its mass number is 166
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Which of the following is a physical change? a. corrosion b. explosion c. evaporation d. food spoil...
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