12) How many moles of FeO are needed to produce 0.400 mol of Fe,0, in the follow
ID: 544567 • Letter: 1
Question
12) How many moles of FeO are needed to produce 0.400 mol of Fe,0, in the following reaction? 4 FeO(s)+02(g)-2Fe3O3(s) B. 0.400 mol A. 0.200 mol C. 0.800 mol D.1.000 mol E. 1.600 mol 13) How many moles of water are in 500 mL (density of water lgmL) A. 55.5 B. 110 C. 13.9 D. 27.8 E. 125 14) What is the oxidation number of the Nitrogen atom in N204? A.-2 B. 0 C. +2 D. +4 E. +6 15) The reaction HI (aq) + KOHaq) KI(aq) + H2O(/) is best classified as a(n) A. acid-base neutralization reaction. C. precipitation reaction. B. oxidation-reduction reaction. D. single replacement reaction. E. combustion 16) In its reaction with water, methanol (CH,OH) CH OH (aq) +H20CH O (aq) + HO (aq) A. acts as a base.B. serves as both an acid and as a base. C. acts as an acid. D, causes a precipitate to form. E. acts neither as an acid nor as a base 17) Which of the compounds in the next equation is insoluble in water A. KCIB. SrCO C. K CO D. SrCl2 E. all are soluble in water 18) Which one is not an empirical formula? 19) Which of the following compounds is not an Arrhenius acid? A. HC1 B. PH C. HNO D. CH COOHF. H2SO4 20) When dissolved in water, HCI, Al(OH)s, CsOH, HNO3, which one are bases? A. Al(OH)s and CsOH D. HCI and HNO B. HCI and Al(OH)s E. CsOH and HCl C. CsOH and HNOExplanation / Answer
12.
From the reaction,
2 moles of Fe2O3 is formed from 4 moles of FeO
Then,0.4 mole of Fe2O3 is formed from (4*0.4)/2= 0.8 moles FeO
So, option "c" is correct
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