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OpenStudy (anonymous):
What is the mass of 2.56 × 10–4 moles of Fe2O3? A. 4.09 × 10–2 g B. 159.6 g C. 6.23 × 105 D. 1.60 × 0–6 g
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OpenStudy (chmvijay):
can u tell me molar mas of Fe2O3
OpenStudy (anonymous):
molecular weight of Fe2O3 =56*2 +16*3 =112+48=160
OpenStudy (chmvijay):
1mole of Fe2O3=160 g of Fe2O3 2.56*10^-4 moles of Fe2O3 =2.56*10^-4 *160
OpenStudy (anonymous):
It's A- if anyone else needs to know
OpenStudy (chmvijay):
yup ur right
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