2. Based on the tiles shown, how many moles of oxygen gas (02) are needed to produce 36.04 grams of water (H20) when reacting with excess ethane in the equation 2C2H6 + 702 + 5CO2 + 6H20? 36.04g0 1 mot,Q 7 mol O2 18.02 9H20 6 motHQ A. 19.0 moles of oxygen (02) B. 14.0 moles of oxygen (02) C. 2.3 moles of oxygen (02) O D. 1.2 moles of oxygen (O2)

6. Consider the following chemical reaction: 2 Cr(OH)3(aq) >Cr₂O3(s) + 3H₂0(1) 12.00 moles of chromium (III) hydroxide is decomposed. Calculate moles of the water produced. O 18.00 moles O 1.500 moles O 4.00 moles O 12.00 moles

Directions: Balance the following chemical equations:1. SiCl4 + H2O → SiO2 + HCl2. Au2S3 + H2 → Au + H2S3. Al + O2 → Al2O34. Ca3(PO4)3 + H2SO4 → CaSO4 + Ca(H2PO4)25. HClO4 + P4O10 → H3PO4 + Cl2O76. FeS + O2 → FeO3 + SO27. PCl5 + H2O → H3PO4 + HCl8. C2H6O + O2 → CO2 + H2O9. C4H10O + O2 → CO2 + H2O10. Fe + O2 → Fe2O3

How many moles of iron (Fe) will be produced from 6.20 moles of carbon monoxide (CO) reacting with excess iron (III) oxide (Fe₂O 23)? Fe₂O3 + 3C0→2Fe +3CO₂ A 4.13 mol Fe 00 B C 28.01 mol Fe 3.14 mol Fe 2.68 mol Fe

How many moles of Al are necessary to form 64.0 g of AIBR3 from this reaction: 2 Al(s) + 3 Br2(1) → 2 AIBR3(s) ? mol 4 5 6. 7 8 9. +/- х 100 3.

#11 please

3. Given: NaCl 1 NiCl₂ + 2 NaOH → 1 Ni(OH)₂ + 2 A student combines 2.44 g of NiCl₂ with 6.44 g NaOH. Determine a. The limiting reactant. b. The mass of the excess reactant that remains at the end of the reaction. c. The number of NaCl molecules that are formed if the reaction is 51% efficient.

A student heats a 2.8695g sample of a mixture that contains an unknown amount of potassium chlorate (KClO3). The KClO3in the mixture decomposes and releases its oxygen. The mass of the remaining sample residue was 2.0427g. KClO3(s) →KCl (s) + 3 O (g) a.How many grams of oxygen were in the KClO3sample? b.How many moles of oxygen atoms is this? c.How many moles of KClO3were in the original sample? d.How many grams of KClO3were in the original sample? e.What is the % of KClO3in the original sample?

Elemental SS reacts with O2O2 to form SO3SO3 according to the reaction 2S+3O2→2SO3 Part A How many O2 molecules are needed to react with 3.51 g of S? Express your answer numerically in units of molecules.     Part B What is the theoretical yield of SO3 produced by 3.51 g of S? Express your answer numerically in grams.