Homework Answers
Add Answer to:
Post-Laboratory Questions 1) A 1.897 g sample of pure Mg(HCO3)2 was heated and decomposed. When the...
Post-Laboratory Questions 1 1.897 g sample of pure Mg(HCO,), was heated and decomposed. When the sample...
Post-Laboratory Questions 1 1.897 g sample of pure Mg(HCO,), was heated and decomposed. When the sample cooled, it weighed 1.071 g. What is the percent yield of this reaction? Mg(HCO₃)2 -> MgCat Co₂ + H₂O Pleas mg (HCO3)2 = 1.897 146.3491m -0.01296 mol og) formed a Imold ng Cog Imol mg Choz Dorina 0-01296 mol memory Lopuli ここのつけんなっalus] 2) A geologist brought in a sample of ore containing Fe(HCO3), and some other, unreactive material. If the sample weighed 1.394 g,...
One way of obtaining pure sodium carbonate is through the decomposition of the mineral trona, Na3(CO3)(HCO3)·2H2O....
One way of obtaining pure sodium carbonate is through the decomposition of the mineral trona, Na3(CO3)(HCO3)·2H2O. 2Na3(CO3)(HCO3)·2H2O(s) → 3Na2CO3(s) + CO2(g) + 5H2O(g) When 1.00 metric ton (1.00 × 103 kg) of trona is decomposed, 0.650 metric ton of Na2CO3 is recovered. What is the percent yield of this reaction? 92.4% 72.1% 65.0% 48.1% 35.0%
1. A 4.385 g sample of mercury (II)oxide was decomposed to produce 4.003 g of liquid...
1. A 4.385 g sample of mercury (II)oxide was decomposed to produce 4.003 g of liquid mercury according to the equation below. Calculate the percent yield of mercury. 2 HgO(s)-> 2Hg() + O2(g) 4.385 (21656 =4.0039 2. Strontium carbonate decomposes into strontium oxide and carbon dioxide gas when heated, as shown below. What mass of strontium carbonate would be required to produce 49 g of strontium oxide, assuming the reaction went at 100% yield? SrCO3(s) > SEO (s) + CO2(g)...
NAME POSTLABORATORY ASSIGNMENT SECTION 8 sample of potassium hydrocarbonate is decomposed by heating potassium carbonate Caksulate...
NAME POSTLABORATORY ASSIGNMENT SECTION 8 sample of potassium hydrocarbonate is decomposed by heating potassium carbonate Caksulate the theoretical vield and percent yield of onate is decomposed by heating to produce 2 KHCO3(-) K 00,6) + H2O) + coce) 2 A 1175 sample mixture of potassium hydropen carbonate is decomposed by heating of the malo is 0.275 g. what is the percentage of KHCO, in the unknown mixture 2 KHCO - KC0,0) + HCO3(e)
SECTION T O POSTLABORATORY ASSIGNMENT 1. A 1.500-g sample of potassium hydrogen carbonate is decomposed by...
SECTION T O POSTLABORATORY ASSIGNMENT 1. A 1.500-g sample of potassium hydrogen carbonate is decomposed by me vield of K CO. 1.040 g of potassium carbonate. Calculate the theoretical yield and percent yield of 2 bonate is decomposed by heating to produce 2 KHCO3(s) 4 K CO3(s) + H2O(g) + CO2(B) 2. A 1.750-g sample containing potassium hydrogen carbonate is decomposed by heating. If the mass loss is 0.271 g, what is the percentage of KHCO3 in the unknown mixture?...
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Briefl...
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Briefly explain whether the following procedural changes would have caused the calculated number of waters of hydration in a hydrate sample to be too high, too low, or unaffected. (a) A student washed the crucible, but failed to heat it to dryness prior to weighing it at the start of the experiment. (b) A student was anxious to finish the experiment and heated the crucible...
Post lab Questions: 1. While performing the formula of hydrate laboratory experiment, the lid accidently slips...
Post lab Questions: 1. While performing the formula of hydrate laboratory experiment, the lid accidently slips over the crucible to completely seal the crucible. a. What effect this change will cause on your calculated experimental results? Explain. b. Would your calculated percent water of hydration be high, low or unaffected? Explain your answer. 2. A student was asked to identify a sample of unknown hydrate. Student was provided with the following experimental data. 3.51 g sample of the hydrate when...
14. Baking soda (NaHCO3) can be decomposed when heated, as shown. 2 NaHCO3 (s) - Na2CO3...
14. Baking soda (NaHCO3) can be decomposed when heated, as shown. 2 NaHCO3 (s) - Na2CO3 (s) + CO2(g) + H2O (9) Use heats of formation to determine the value of AH for this reaction. (8 points)
Experiment 12: Generating Hydrogen Gas Post-lab 1. A sample of potassium chlorate is heated, and decomposes...
Experiment 12: Generating Hydrogen Gas Post-lab 1. A sample of potassium chlorate is heated, and decomposes according to the balanced chemical equation shown below. 2 KC1O36) ► 2 KCI) + 3 02 (3) A 0.728 g sample of KCIO, produces 216 mL of oxygen gas collected over water at 22C and an atmospheric pressure of 762 mmHg. Determine the actual yield, theoretical yield, and percent yield of oxygen gas:
POST LABORATORY QUESTIONS 1. Write the molecular, total ionic, and net ionic equations for the reaction...
POST LABORATORY QUESTIONS 1. Write the molecular, total ionic, and net ionic equations for the reaction between aqueous solutions of Sr(NO3)2 and Na2S04. Molecular: Total Ionic: Net Sonic: 2. A Chem 1314 student has narrowed the unknown choice down to NaBr or NalO3. What reagent from this lab should she add to make her final identification? 3. A 6.0 g sample that contains a mixture of CaCl2 and NaCl was dissolved in water, and the solution treated with sodium oxalate...
Post-Laboratory Questions 1 1.897 g sample of pure Mg(HCO,), was heated and decomposed. When the sample cooled, it weighed 1.071 g. What is the percent yield of this reaction? Mg(HCO₃)2 -> MgCat Co₂ + H₂O Pleas mg (HCO3)2 = 1.897 146.3491m -0.01296 mol og) formed a Imold ng Cog Imol mg Choz Dorina 0-01296 mol memory Lopuli ここのつけんなっalus] 2) A geologist brought in a sample of ore containing Fe(HCO3), and some other, unreactive material. If the sample weighed 1.394 g,...
1. A 4.385 g sample of mercury (II)oxide was decomposed to produce 4.003 g of liquid mercury according to the equation below. Calculate the percent yield of mercury. 2 HgO(s)-> 2Hg() + O2(g) 4.385 (21656 =4.0039 2. Strontium carbonate decomposes into strontium oxide and carbon dioxide gas when heated, as shown below. What mass of strontium carbonate would be required to produce 49 g of strontium oxide, assuming the reaction went at 100% yield? SrCO3(s) > SEO (s) + CO2(g)...
NAME POSTLABORATORY ASSIGNMENT SECTION 8 sample of potassium hydrocarbonate is decomposed by heating potassium carbonate Caksulate the theoretical vield and percent yield of onate is decomposed by heating to produce 2 KHCO3(-) K 00,6) + H2O) + coce) 2 A 1175 sample mixture of potassium hydropen carbonate is decomposed by heating of the malo is 0.275 g. what is the percentage of KHCO, in the unknown mixture 2 KHCO - KC0,0) + HCO3(e)
SECTION T O POSTLABORATORY ASSIGNMENT 1. A 1.500-g sample of potassium hydrogen carbonate is decomposed by me vield of K CO. 1.040 g of potassium carbonate. Calculate the theoretical yield and percent yield of 2 bonate is decomposed by heating to produce 2 KHCO3(s) 4 K CO3(s) + H2O(g) + CO2(B) 2. A 1.750-g sample containing potassium hydrogen carbonate is decomposed by heating. If the mass loss is 0.271 g, what is the percentage of KHCO3 in the unknown mixture?...
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Briefly explain whether the following procedural changes would have caused the calculated number of waters of hydration in a hydrate sample to be too high, too low, or unaffected. (a) A student washed the crucible, but failed to heat it to dryness prior to weighing it at the start of the experiment. (b) A student was anxious to finish the experiment and heated the crucible...
Post lab Questions: 1. While performing the formula of hydrate laboratory experiment, the lid accidently slips over the crucible to completely seal the crucible. a. What effect this change will cause on your calculated experimental results? Explain. b. Would your calculated percent water of hydration be high, low or unaffected? Explain your answer. 2. A student was asked to identify a sample of unknown hydrate. Student was provided with the following experimental data. 3.51 g sample of the hydrate when...
14. Baking soda (NaHCO3) can be decomposed when heated, as shown. 2 NaHCO3 (s) - Na2CO3 (s) + CO2(g) + H2O (9) Use heats of formation to determine the value of AH for this reaction. (8 points)
Experiment 12: Generating Hydrogen Gas Post-lab 1. A sample of potassium chlorate is heated, and decomposes according to the balanced chemical equation shown below. 2 KC1O36) ► 2 KCI) + 3 02 (3) A 0.728 g sample of KCIO, produces 216 mL of oxygen gas collected over water at 22C and an atmospheric pressure of 762 mmHg. Determine the actual yield, theoretical yield, and percent yield of oxygen gas:
POST LABORATORY QUESTIONS 1. Write the molecular, total ionic, and net ionic equations for the reaction between aqueous solutions of Sr(NO3)2 and Na2S04. Molecular: Total Ionic: Net Sonic: 2. A Chem 1314 student has narrowed the unknown choice down to NaBr or NalO3. What reagent from this lab should she add to make her final identification? 3. A 6.0 g sample that contains a mixture of CaCl2 and NaCl was dissolved in water, and the solution treated with sodium oxalate...
Most questions answered within 3 hours.
-
Calculate and plot the number and weight distributions of x-mers
found in a step-growth polymerization for...
asked 7 minutes ago -
The Baily Corporation has developed a specialized software
program that improves inventory control capability. The following...
asked 11 minutes ago -
Problem 5-4A (Part Level Submission) Wolford Department Store is
located in midtown Metropolis. During the past...
asked 11 minutes ago -
Preparation of Benzoic Acid using a Grignard Reagent URGENT
1. During your Grignard formation, a small...
asked 34 minutes ago -
A uniform magnetic field is perpendicular to the plane of a wire
loop. If the loop...
asked 33 minutes ago -
At the peak of your career, your were earning $120,000 and
holding a top level position....
asked 36 minutes ago -
. A permanent magnet is dropped south-end-down through a horizontal
circular coil with a radius of...
asked 38 minutes ago -
Bernie's Beverages purchased some fixed assets classified as
5-year property for MACRS. The assets cost $28,000....
asked 52 minutes ago -
How many ATPs are produced from the catabolism of a 10-C
molecule of fatty acid under...
asked 56 minutes ago -
Before practicing a routine on the rings, a 64.8 kg gymnast
hangs motionless, with one hand...
asked 58 minutes ago -
If the K b of a weak base is 6.3 × 10 − 6 , what...
asked 1 hour ago -
Which of the following is the minimum amount of moles of NaOH
that must be added...
asked 1 hour ago