Which statement describes a chemical reaction? a) atoms in the products are rearranged to form new substances b) atoms in the reactants are rearranged to form new substances c) atoms in the products change into new atoms to form new substances d) atoms in the reactants change into new atoms to form new substances
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Why must humans find substitutes for many minerals found on earth? (a) form at an extremely slow rate (b) controlled by other countries (c) too deep in the earth to collect
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A20 liter cylinder of helium at a pressure of 150 atm and a temperature of 27°c is used to fill a balloon at 1.00 atm and 37°c. what is the volume of the balloon? a. 0.14 liters b. 3000 liters c. 2900 liters d. 2400 liters e. 3100 liters
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Which statement describes a chemical reaction? a) atoms in the products are rearranged to form new...
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