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Let 𝐴=∫1021𝑥d𝑥 and let 𝐿4

5. Suppose that the volumes of four stars in the Milky Way are 2.7 × 1018 km3, 6.9 × 1012 km3, 2.2 × 1012 km3, and 4.9 ×
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48 × 23 = ?Responses A 1,1021 B 1,1621 C 1,1741 D 1,104
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Calculate the moles of {\rm Cu} in 2.5×1021 atoms of {\rm Cu}.
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How many moles of ammonia will contain 1.55 x 1021 atoms of hydrogen?Thanks for any help
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Calculate the number of moles in 3.50 x 1021 atoms of silver.
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It is found that 1.431 g of element X contains 7.509 × 1021 atoms. The atomic mass of X is?
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Which fraction is equivalent to 5/7 ?(1 point) Responses 1021 10 over 21 1521 15 over 21 79 7 ninths 20/21
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Which fraction is equivalent to 575 7 ?(1 point) Responses 1021 10 21 10 over 21 1521 15 21 15 over 21 79 7 9 7 ninths
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Which number is not in scientific notation?Group of answer choices 11 ⋅ 1021 5.7 ⋅ 109 3.1 ⋅ 10−12 1.67 ⋅ 10−5
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2. asked by Misa Suruy
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How many molecules are present in one mole of glucose, C6H12O6?a) 6.92 ×10–26 b) 3.34 × 1021 c) 6.02 × 1023 d) 1.44 × 1025
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