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How many moles of atoms are in each elemental sample?
How many moles of atoms are in each elemental sample?A. 1.24 g Zn
B. 28.1 g Ar
C. 84.0 g Ta
D. 2.29x10^-2 g Li
Answer:Moles = mass(m) / Molar mass (M)A. 1.24g of Znm = 1.24gM = 65.4 g/molmoles of Zn = 1.24g/ 65.4g/mol= 0.01896molB. 28.1 g Arm = 28.1gM(Ar) = 39.9g/molmoles of Ar = 28.1g/39.9g/mol= 0.7043 molC. 84.0 g Tam = 84.0gM(Ta) = 181g/molmoles of Ta = 84.0g/181g/mol= 0.4641 molD. 2.29x10^-2 g Lim = 2.29x10^-2 gM(Li) = 6.9g/molmoles of Li = 2.29x10^-2 g / 6.9g/mol= 0.0033 molHope this helps...
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