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2. Determine the number of atoms in .467g of sulphuric acid,...
Determine the mass of zinc sulphide, ZnS, which are produced when 6.2 g of zinc and...
Determine the mass of zinc sulphide, ZnS, which are produced when 6.2 g of zinc and 4.5g of sulphur are reacted. (7 marks) 3. 4. What is the percent yield for a reaction if you predicted the formation of 21grams of Ce12 and actually recovered only 3.8 grams? (4 marks) 2. Determine the number of atoms in 467g of sulphuric acid, H2S04. (6 marks) 3. a) The percentage composition of acetic acid is found to be 39.9% carbon, 6.7% hydrogen,...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6%...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...
please answer all my questions for me. thank you!! Use the References to access important values...
please answer all my questions for me. thank you!!
Use the References to access important values if needed Calculate the percentage composition for NO2. Mass percentage of nitrogen = Mass percentage of oxygen = Submit Answer Retry Entire Group 8 more group attempts remaining Reference! Use the References to access important value of needed for this question 53.95 gram sample of iron is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 77.14...
Dundalk Institute of Technology Jan 2017 Question 4 000 ML (a) A 50.0 cm sample of...
Dundalk Institute of Technology Jan 2017 Question 4 000 ML (a) A 50.0 cm sample of sulphuric acid (H2504) was diluted to 1.00 Litre. A sample of the diluted sulphuric acid was analysed by titrating with aqueous sodiun hydroxide (NaOH) In the ttration, 25.0cm2 of 1.00 mol/ Laqueous sodium hydroxide required of the diluted sulphuric acid for neutralisation. 0 Write the equation for the full neutralisation of sulphuric acid by sodium ydroxide. (0)C (ili) Calculate the concentration(M) of the diluted...
Please answer all questions correctly! And clear thank u Question 26 0.5 pts A compound containing...
Please answer all questions correctly! And clear thank u
Question 26 0.5 pts A compound containing carbon and hydrogen underwent combustion to produce 4.50 g carbon dioxide and 1.84 g of water. What is the empirical formula of the compound? CH
Question 10: The NASA Dawn mission recently measured the surface of Ceres, a large asteroid between...
Question 10: The NASA Dawn mission recently measured the surface of Ceres, a large asteroid between Mars and Jupiter. It found traces of organic material. The composition of one of the organic materials is: 37.46% carbon, 12.59% hydrogen and 49.95% oxygen. What is the empirical formula of this organic compound? 7 marks
6. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain. What is the...
6. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain. What is the product when one molecule of SO2 reacts with one molecule of water? A. two molecules of sulfurous acid D. one molecule of sulfuric acid B. one sulfate ion E. one molecule of sulfurous acid C. two sulfite ions 7. Identify the correct statement regarding the mole. A. A mole of oxygen gas contains 6.02 x 10 atoms B. A mole...
Question 15 of 25 > Attempt 5 The pyruvic acid from glycolysis can be converted to...
Question 15 of 25 > Attempt 5 The pyruvic acid from glycolysis can be converted to acetic acid, which can enter the citric acid cycle. Because this process is a cycle, the atoms entering the cycle must balance the atoms that leave. Consider carbon balance in the citric acid cycle. How many Co, molecules leave the cycle for each acetic acid molecule that enters? For this question, assume that carbon only enters as acetic acid and exits as CO2. Note...
i would really appreciate a quick answer please, thank you 4. Answer the following question (13...
i
would really appreciate a quick answer please, thank you
4. Answer the following question (13 marks) a. Caffeine (C&H 0N4O2) is natural stimulant most commonly found in tea, coffee and cacao plants. Calculate the percentage composition of the elements present. (5 marks) b. Question 4 continued. Calculate the mass of nitrogen in 20.6g of caffeine. (2 marks) c. The combustion of caffeine produces carbon dioxide; water and nitrogen gas. Determine the mass of carbon dioxide produced from the combustion...
please answer all the question
1. When 4.912 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 15.41 grams of CO2 and 6.311 grams of H2O were produced.In a separate experiment, the molar mass of the compound was found to be 28.05 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon.Enter the elements in the order presented in the question.empirical formula =molecular formula =2. When 6.848 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 21.49 grams of CO2 and 8.799 grams of H2O were produced.In a separate experiment, the molar mass...
Determine the mass of zinc sulphide, ZnS, which are produced when 6.2 g of zinc and 4.5g of sulphur are reacted. (7 marks) 3. 4. What is the percent yield for a reaction if you predicted the formation of 21grams of Ce12 and actually recovered only 3.8 grams? (4 marks) 2. Determine the number of atoms in 467g of sulphuric acid, H2S04. (6 marks) 3. a) The percentage composition of acetic acid is found to be 39.9% carbon, 6.7% hydrogen,...
please answer all my questions for me. thank you!!
Use the References to access important values if needed Calculate the percentage composition for NO2. Mass percentage of nitrogen = Mass percentage of oxygen = Submit Answer Retry Entire Group 8 more group attempts remaining Reference! Use the References to access important value of needed for this question 53.95 gram sample of iron is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 77.14...
Dundalk Institute of Technology Jan 2017 Question 4 000 ML (a) A 50.0 cm sample of sulphuric acid (H2504) was diluted to 1.00 Litre. A sample of the diluted sulphuric acid was analysed by titrating with aqueous sodiun hydroxide (NaOH) In the ttration, 25.0cm2 of 1.00 mol/ Laqueous sodium hydroxide required of the diluted sulphuric acid for neutralisation. 0 Write the equation for the full neutralisation of sulphuric acid by sodium ydroxide. (0)C (ili) Calculate the concentration(M) of the diluted...
Please answer all questions correctly! And clear thank u
Question 26 0.5 pts A compound containing carbon and hydrogen underwent combustion to produce 4.50 g carbon dioxide and 1.84 g of water. What is the empirical formula of the compound? CH
6. Sulfur dioxide from coal-fired power plants combines with water in the atmosphere to produce acid rain. What is the product when one molecule of SO2 reacts with one molecule of water? A. two molecules of sulfurous acid D. one molecule of sulfuric acid B. one sulfate ion E. one molecule of sulfurous acid C. two sulfite ions 7. Identify the correct statement regarding the mole. A. A mole of oxygen gas contains 6.02 x 10 atoms B. A mole...
Question 15 of 25 > Attempt 5 The pyruvic acid from glycolysis can be converted to acetic acid, which can enter the citric acid cycle. Because this process is a cycle, the atoms entering the cycle must balance the atoms that leave. Consider carbon balance in the citric acid cycle. How many Co, molecules leave the cycle for each acetic acid molecule that enters? For this question, assume that carbon only enters as acetic acid and exits as CO2. Note...
i
would really appreciate a quick answer please, thank you
4. Answer the following question (13 marks) a. Caffeine (C&H 0N4O2) is natural stimulant most commonly found in tea, coffee and cacao plants. Calculate the percentage composition of the elements present. (5 marks) b. Question 4 continued. Calculate the mass of nitrogen in 20.6g of caffeine. (2 marks) c. The combustion of caffeine produces carbon dioxide; water and nitrogen gas. Determine the mass of carbon dioxide produced from the combustion...
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