CHEM 1300 E01/E02

Ex. 110 - Calculating Mass of 3 attempts left Check my work What mass of oxygen is needed to react with 1.79 gal of methanol according to the balanced equation below? (1.00 gal = 3.79 L, and the density of methanol is 0.793 g/mL.) 2 CH3OH() + 3 02g) – 2 CO2g) + 4 H2O(g) If appropriate, express your answer in scientific notion. (Click on the answer box to show the pallet.) < Prev 3 of 5 ***** ****

27 A chemist prepares a solution of sodium chloride (NaCl) by measuring out 0.50 g of NaCl into a 250. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Cl anions in the chemist's solution. do Be sure your answer is rounded to 2 significant digits. 18 Ar mol x10 L Submit Assignment Continue 2022 McGraw Hill LLC. AIl Rights Reserved. Terms of Use Privacy Center Accessibility Show All IMG-6095.jpg IMG-6096.jpg IMG-6097.jpg IMG-6098.jpg IMG-6099.jpg MacBook Air DD DII F12 F11 F10 F9 80 F7 F8 F6 F5 F4 esc F2 F3 F1 & % @ # 7 8 3 4 5 6 1 2 { P E R Y Q W %24

62. Antacid Fizz When an antacid tablet dissolves in water, the fizz is due to a reaction between sodium hydrogen carbonate (NaHCO3), also called sodium bicarbonate, and citric acid (H₂CH₂O₂). 3NaHCO3(aq) + H₂CH₂O,(aq) → 3CO₂(g) + 3H₂O(l) + Na, C₂H₂O₂(aq) How many moles of Na₂C,H,O, can be produced if one tablet containing 0.0119 mol of NaHCO is dissolved?

Complete the following questions using 6 iron (Fe) atoms for each request. a. Draw, on the particulate level, the solid, liquid, and gas phases of 6 Iron (Fe) atoms in each phase. a1.10 bu aid E b. Write the chemical equation (symbolic representation) of iron changing from a gas phase to a liquid phase. c. Describe what you would observe while watching iron change from a liquid phase to a solid phase.

Remaining Time! 02:29:4. Consider the balanced chemical equations shown below. When a 6.00 g sample of a mixture of iron (Fe) and aluminum (Al) is treated with excess HCl(aq), 0.177 moles of H2 are obtained. What is the mass percentage of Fe in the original mixture? Choose the closest answer. Fe(s) + 2 HCI(aq) FeCl2(aq) - + H2(g) 2 Al(s) +6 HC((aq) 2 AICI3(aq) + 3 H2(g) 96 % 69 % 47 % 33 % 17 % Rack Question Menu - O O

How can we find the percentage? And the produced?

Z @ ▶ 12. ✿ Text-to-Speech You are asked to make 43.0 grams of iron (Fe) from iron III oxide (Fe:O) and carbon monoxide (CO) as shown in the chemical equation below. Fe₂O3 + 3C0→2Fe + 3C0₂ How many grams of iron (III) oxide must you use? OA. 61.5g OB. 122 g OC. 0.777 g OD. 686 g 1246 2 W S # X 15 # 3 E 14 H L $ 4 Q Search R D F % 5 T CV 6 b VI B | & Y lipi GH 7 Lo *K U N 8 J 19 144 9 K M fo Dl O In DDI P : [ = ? 1 F 10 10 10 10 1

decomposition: HgO(s) → Express your answer as a complete chemical equation, with reactants and products. the phases in your answer.

Sample 1 Sample 2 Sample 3 Mass of Erlenmeyer Flask (g) 24.33 24.37 24.44 Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (g)   (g)(lime water) 27.22 27.29 27.33 Mass of Calcium Hydroxide Solution (g) 2.89 2.92 2.89 Volume of Ca(OH)2 Density = 1.000 g/mL 2.89 2.92 2.89 Concentration of HCl (M) 0.1 0.1 0.1 Initial HCl Volume in Syringe (mL) 1.00+1.00 1.00+1.00 1.00+1.00 Final HCl Volume in Syringe (mL) .72 .66 .54 Volume of HCl Delivered (mL) 1.28 1.34 1.46 Moles of HCl Delivered       Moles of OH- in Sample       Moles of Ca2+ in Sample       Molar Solubility (M)       Calculated Ksp       Average Calculated Ksp       I am very confused how to solve the blank spots in the table. Everything including and after "Moles of HCl Delivered" confuses me. Please help me figure out how to solve the sections correctly. Also feel free to…