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What is the total number of protons in the nucleus of calcium -42?
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The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!
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Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.
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What is the total number of protons in the nucleus of calcium -42?...
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