Question

VO V205 1. Vanadium and oxygen react to make vanadium (V) oxide. How many grams of vanadium and - oxygen are needed to make 85 g of vanadium (V) oxide? Ans. 48 g of vanadium and 37 g of oxygen. 2( 50, 942) +5lis.499 ) 85g U2O5 x 1 mol v2 og 181.879 gvos k 181.87ague5 Imol v₂O5 2. Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100 g of iron(III) oxide is reacted with 2.00 g of hydrogen gas, how much iron metal will be formed? Ans. 36.9 g Fe 3. How many grams of precipitate are formed when an aqueous solution containing 75 g of cobalt(II) chloride is mixed with a solution containing 65 g of potassium phosphide? Ans. 468 of precipitate poi and P s alts have similar scubility 4. A compound containing C, H, and O is 30.0% C and 10.1% H by mass. If the compound has a molar mass of 240 g/mol, what is its molecular formula? Ans. C.H2409 Need to change to grams 5. When 3.3 g of CH1o is combined with 0.50 mL of liquid bromine, 3.5 g of CH1oBrs is isolated. What is the percent yield for this reaction? The density of liquid bromine is 13.1 g/mL. Ans. 45% yield Tpam 'mol Bra CH10() + 3 Brz ()→ CH1Brs (O) 3.39 0.50 mL Brax B =655 6. A small piece of zinc is dissolved in an aqueous solution that contains 1.92 g of HCI. Zn(s) + 2HCl(aq) → ZnCl(aq) + H2(g) (unbalanced) 1.929 At the conclusion of the reaction, all of the zinc has dissolved and 1.42 g of HCl is left over. What must have been the mass of the piece of zinc dissolved? Ans. 0.45 g Zn 2 n = 65.36

Answer 1

according to HOMEWORKLIB RULES i cannot solve all the problems. If ypu want the answer of all the questions please upload them seperately