3x mol 1.47 mol 2Al+3Br2---gt;Al2Br6 3x=1.47 x=0.49 mol
1 Answers 1 views2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)Molar mass of Al= 26.98153985/26.981539= 3.15molMolar mass of H2SO4= 98.079 85/98.079= 0.87molMole ratio of Al:Al2(SO4)3= 2:1Mole ratio of H2SO4:Al2(SO4)3= 3:1= 1/2+1/3= 5/6Molar mass of Al2(SO4)3= 342.15 g/mol342.16×5/6= 285.13g
1 Answers 1 viewsSolution:The balanced chemical equation:4H2SO4 + NaClO4 + 8KBr → NaCl + 4H2O + 4Br2 + 4K2SO4According to the equation above: n(NaClO4) = n(Br2)/4 Moles of NaClO4 = Molarity of NaClO4 × Solution volumeMoles of NaClO4 = 1.30 mol/L × 0.06 L =...
1 Answers 1 viewsSolution:The balanced chemical equation:2KBr + Cl2 → 2KCl + Br2According to the equation above: n(Br2) = n(KBr)/2Moles of KBr = Mass of KBr / Molar mass of KBrThe molar mass of...
1 Answers 1 viewsSolution:Balanced chemical equation:2Al + 6HCl → 2AlCl3 + 3H2According to the equation above: n(Al)/2 = n(H2)/3The molar mass of Al is 27 g/mol.Hence,Moles of Al = (108 g Al) ×...
1 Answers 1 viewsThe equation for this reaction is: Br2 + Cl2 → 2BrCl The number of moles of chlorine gas equals: ν(Cl2) = m(Cl2)/Mr(Cl2) = 26.6 g / (2×35.5 g mol-1) =...
1 Answers 1 viewsm = V×ρm(Br2) = 8.50 mL × 2.91 g/mL = 24.735 gM(Br2) = 159.808 g/moln = m/Mn(Br2) = 24.735 g / 159.808 (g/mol) = 0.154 molOne mole of Br2 molecules...
1 Answers 1 viewsAt first, kilogrammes should be turned into grams:m=80×1000=80000(g).Then, mass should be divided by molar mass:n=m/M=80000/79.9=1001.3(mol).(The data is not very clear. If the point is not mistake, and there are .80...
1 Answers 1 viewsN3H4 + CIF3 = CIFN3H3 + HF.40 x 20 / 46 = 17,3913043 g.
1 Answers 1 views2AlBr3 = 6KBr2×[27+3(80)]AlBr3 = 6× (39+80) KBr2×267g AlBr3 = 6×119 g KBr1g AlBr3 = (6×119)/(2×267) g KBr306g AlBr3 = (6×119×306)/(2×267)g KBr = 409.15g%yield = actual yield/ theoretical yiedlld ×100%% yield...
1 Answers 1 views