1.) is157.7 g <span>moles Fe = 209.7 g/ 55.847 g/mol=3.75 the ratio between Fe and CO is 2 : 3 moles CO = 3.75 x 3 /2 =5.63 mass CO = 5.63 mol x 28.01 g/mol=157.7 g
2.) is </span><span>1.06 moles </span>48.7/23 = 2.12 moles sodium <span>2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles </span> 1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen.
3.) is 91.8 <span>8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced. </span><span>8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically. </span><span>% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 </span>
Group 1 elements (usually called alkali metals) are not very electronegative and have small ionization energies due to that. The reason why they are not very electronegative is that they really want to loose their one valence electron so that they can have a noble gas electron configuration (completed octet).
