Chemistry questions

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kbzrel

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please complete the questions. I will upload more of the problems since I can’t post them all at once. Thank you.

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< Homework # 3 < 1 of 17 Exercise 6.19 e Part A Constants Periodic Table 2.8 mol Cu How many atoms are in each elemental sample? Express your answer using two significant figures. ? Sharing ΥΠΙ ΑΣφ egs atoms N = ols > Submit Request Answer Part B 6.3x10-3 mol C Express your answer using two significant figures. ? ΟΙ ΑΣΦ atoms N = Submit Request Answer Exercise 6.19 Part C Constants | Periodic Table 22.1 mol Hg Express your answer using three significant figures. How many atoms are in each elemental sample? ? Sharing ΥΠΙ ΑΣΦ ngs atoms N = ols Submit Request Answer Part D 0.150 mol Na Express your answer using three significant figures. ? EVO AED atoms N = Submit Request Answer е Part A Constants Periodic Table 5.2x1024 Pb atoms How many moles of atoms are in each elemental sample? Express your answer using two significant figures. Sharing V AEO ? ngs mol V = ols Submit Request Answer Part B 3.15x1022 He atoms Express your answer using three significant figures. ? ΟΙ ΑΣΦ mol V = Submit Request Answer ne Part C Constants Periodic Table How many moles of atoms are in each elemental sample? 6.58x1023 K atoms Express your answer using three significant figures. at Sharing tings ΤΕΙ ΑΣφ ? > Tools mol = ע Submit Request Answer Part D 4.06x1021 Ca atoms Express your answer using three significant figures. AEO ? mol V = Exercise 6.29 Part A Constants Periodic Table How many moles of atoms are in each elemental sample? 1.74 g Zn ng V AQ ? mol Submit Request Answer Part B 21.5 g Ar ? 9 Η ΑΣΦ mol V= Submit Request Answer
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