Question

мимитисмо 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles are in 2.3 grams of phosphorus? 6) How many grams are in 11.9 moles of chromium 7) How many moles are in 9.8 grams of calcium? 8) How many grams are in 238 moles of arsenic? What are the molecular weights of the following compounds? 9) NaOH 12) H3PO4 10) H20 13) Mn Set 11) MgCl2 14) (NH4)2SO4 Focus 5 414 words English (United States

Answer 1

Giren mass AM ve I c rte Knoce no.mole n) = Aterric mass (m) Atomic mass of h = 6.94 g noi! => n = 154 -} = 9.16 mol 6.94 & met! Hemic mass of fulfur = 39.06 3 39.06 g/men = M = 2.9 m x 32.66 g my = 76.95g 229 - 0.55 ma 39.94 gmot? M = 88.1 mole x 94.30 gr]' = 2190.83 g : = 9.9 ģ 30.97 gmol M = 11.9 milk x 51.99 g most! = 618.681 gram n = 9.8 q = 0.25 mol 40.07 goal M = 238-mol x 14.92 g ma! = 17.830.96 gram Molecular weight of a eight of Nal H = Hemic mass of (Na +O+H) - 29.98 + 15.99 +1.00 = 39.97 g/mol Mow of Hyo = 2x1.00 +15.99 217.99 giro Mow of mga2 = 24.30 + 2 (35.45) 2 95.2 g / many W q H2PO4 z 3* 1.60 + 30.97 +9(15.99) -97.9391- M. W q Mng féz = 9x59.93 +7(19.96 ) = 662.58 gimas Mowl q (NH),604 = 2 (NH4) +8+460) = 2 (18) + 37.06 +4(15.99) = 132.02 g/mol B E @ @ @@ į @ Scanned with CamScanner