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- 1.What is tre percent 2. H3PO4, Phosphoric acid, is used in detergents, fert izers, toothpastes and flavoring in carbonated beverages. Calculate the percent composition by mass to two decimal places of H, P ardO in this compound Previous Next » Orive hp & 大 3 5 6 7 8 9. W %24Compute: % of chlorine in potassium chloride. O a. 100% O b. 47% O c. 53%Explain how the calculated % composition by mass of water in the compound and the calculated chemical formula would be affected, if: a. You did not heat the hydrated copper (II) sulphate enough You overheated the hydrated copper (II) sulphate b. 19 étv MacBook Pro #3 $ * 4 6 7 9 W Y U P G H J K L C V M готтand MOSISO command opt .. .* E
- An organic liquid is either methyl alcoholethyl alcohol or a mixture of the two.A 0.220 g sample of the liquid is burned in an excessof and yields 0.352 g Is the liquid apure alcohol or a mixture of the two?o experim Buction Stoichior drogen c aking sor a gas (ca be mor Ther sod 2: Initial grams of NaHCO3 Reaction C Run 1: Initial grams of NaHCO3 le needed ____NaHCO3(s) Run 2: Initial grams of NaHCO3 = nate sinn stoichiometry. Unlicensed printer. License is needed Na₂CO3(s) + Theoretical yield (grams) of Na₂O: Percent yield (Run 2) = CO₂(g) +_____H₂O(g) Theoretical yield (grams) of Na₂CO3:_ Percent yield (Run 1) = Theoretical yield (grams) of Na2CO3: Percent yield (Run 2) = cill wait!Mass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel + filter paper (g) = 15.85g Mass of top funnel + filter paper + CaCO3 collected (g) = 17.81g CaCl2 + Na2CO3 ==== CaCo3 + 2NaCl Moles Na2CO3 reacting? Moles CaCO3 reacting? Moles CaCO3 produced by the LR? Theoretical yield in moles and grams? Reagent in excess? Moles of reagent in excess left unreacted? Mass of precipitate? Experimental yield? Percent yield?
- Mass of Na2CO3.H2O (g) = 2.12g (g) Mass of the CaCl2.2H2O (g) = 1.98g Mass of the top funnel + filter paper (g) = 15.85g Mass of top funnel + filter paper + CaCO3 collected (g) = 17.81g CaCl2 + Na2CO3 ==== CaCo3 + 2NaCl Moles CaCO3 produced by Na2CO3 (if all Na2CO3 reacts)? Moles CaCO3 produced by Na2CO3 (if all CaCl2 reacts)? What is the Limiting Reagent? Moles Na2CO3 reacting? Moles CaCl2 reacting?CALCULATIONS: SHOW COMPLETE "SET-UPS" (and the rounding off) for all calculations on the bottom of this a separate sheet. Use the correct number of significant figures and correct units. page or on 1. Mass of PbCrO4 formed 2. Moles of PbCrO4 formed 3. Formula of Limiting Reagent 4. Moles of PbCrO4 predicted by calculation 5. % Difference in moles formed and predicted gnificant figures and correct units. B 44.1248 44.3198 44.2921 A 44.0432 44.3279 14.25979 th both reagents. Briefly, indicate the BCompute: % of sodium in sodium oxide. O a. 74% O b. 60% O c. 59%
- g and lear X Your one-time code - escobedoa x G how do you cover a ml to liter -x + keAssignment/takeCovalentActivity.do?locator-assignment-take Use the References to access important values if needed for this question. According to the following reaction, how many moles of carbon dioxide will be formed upon the complete reaction of 31.9 grams of carbon (graphite) with excess oxygen gas? C(s) + O₂(g) → CO₂(g) mol carbon dioxide Submit Answer Q Search L Retry Entire Group Ws LPI 2 more group attempts remaining BAGNOdı hp ☆ 口 Previous OG 1 6:5 5/18/14 - For CH4 molecule containing avagadro’s number of atoms; I. It is 0,2 moles. II. Contains 4,8x1023 pieces of H atoms. III. It is 4,48 liters in UNC. Which of the statements are corrrect? A) II and III B) Only II C) I and II D) I, II and III E) Only I+ C. 2. My Sac Update app.101edu.co O 个 → Submit Question 7 of 32 What quantity in moles of iron atoms do you have if you have 2.50 x 1023 atoms of iron. (The mass of one mole of iron is 55.85 g.) 20 mol 1. 3. 6. 5. 4. 8. 9. 7. +/- 411 3. 3,176 3.