Question

1) 1) What is the stoichiometric coefficient for water when the following equation is balanced using the lowest whole-number coefficients? _C3HgO(l) + _02(8) - — CO2(g) + ___ _H2O(1) A) 6 B) 3 098 D) 7 2) Which of the following correctly illustrates the conservation of mass for the reaction below? 2) 4Na(s) + O2(g) - 2Na2O(s) A) 92.0 g Na, 16.0 g O2, 108 g Na2O B) 92.0 g Na, 16.0 g 02, 124 g Na2O C) 23.0 g Na, 16.0 g O2, 124 g Na2O D) 23.0 g Na, 16.0 g 02, 39.0 g Na2O E) 92.0 g Na, 32.0 g 02, 124 g Na20 3) 3) The following diagram represents the reaction of A (unshaded spheres) with B (shaded spheres). What is the balanced chemical equation for this reaction, and what is the limiting reactant? O oool 108 a A) 4A2 + 6B - 6AB; B is the limiting reactant. B) A2 + 2B - 2AB; B is the limiting reactant. C) A2 + 2B - 2AB; A2 is the limiting reactant. D) 4A 2 + 6B - 6AB; A2 is the limiting reactant. 4) How many moles of hydrogen are needed to react with 0.234 mol of oxygen according to this equation? 2H2(g) + O2(8) - 2H2O(g) B) 0.234 mol C) 0.936 mol D) 0.468 mol A) 2.00 mol

Answer 1

0 29 480p) +902 -+ 6CO2 + 8 10 - towest whole Number 16 Answer ③6 € 4 Na to2(6) - anazo (9) 4 kholes Na realt with one mole og give amoles - Nago 4x23=929 of Na, 3axt = 32 g 0f02 and 62x2=1249 Naso Answer 92 0g Na, 32g of a and long nazo

③ - QAB Bis limiting o B reactent A B ® A2+2B AB SB is limiting reactant) Compleatly consumed 2 H₂ (g) | O2 & H₂Org1 from eam a moles of H2 react with 'One moles o 1 give a moles H₂O a mole H₂ react one mole of o2 How many moles of Hz react with 0.234 mole of 02 280.234 mole of oz = 0.468 mole of a 10 0.468 model of oz