Question

How many moles of oxygen atoms (0) are in 5.2 moles of Fe,0,? a) 0.0 b) 0.87 c) 1.7 d) 2.6 e) 3.5 ab) 7.8 ac) 10. ad) 15.6 a) 31.2 3.2 + ( 3 ) = 15.6 18) What is the coefficient for H20 when the following equation is balanced? _ BF, (g) + _H20 (1) ► _B20(g) + ___ HF a) 0 b) 1 c) 2 d) 3 e) 4 ab) 5 ac) 6 ad) 7 ae) 8 bc) 9 bd) 10 be) 11 cd) 12 ce) 13 de) 14

Answer 1

17) Moks of oxygen atom (o)= morsot Fe2O3 X3 Moles ouygen IMO! Siamol x 3 moll IMOI = lewex res SnowgoSI = Ansies (ad) 1518) + - 80369) + – HF - BFzco)+ - H2O above Egnation balance - 2 BF3 (g) + 3 H₂O Renetant No. of B =2 ; I B₂O3(g) + 6 HF - Products 5 = 2x152 = 2x3=6 - 6X1=6 6.x1=6. # -3X2=6 = 3x123 -> 3x1=3 Both side are Eguay.