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Mathematics, 06.08.2021 18:40 corrineikerd

Help me :) but the first one is beryllium-13 or beryllium-15 the second blank is 40 or 400 and 4,000 and the last blank is beryllium-13 or beryllium-15

Help me :) but the first one is beryllium-13 or beryllium-15 the second blank is 40 or 400 and 4,00

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Help me :) but the first one is beryllium-13 or beryllium-15 the second blank is 40 or 400 and 4,000...

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