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4 Edit & C Question 33 2 pts How many moles of CO2 will be make...
4 Edit & C Question 33 2 pts How many moles of CO2 will be make from 19.9 g of propane (C3H8) with a molar mass of 44.10 g/mol? CzHg +502 3CO2 + 4H20 Question 34 2 pts How many mols of reactant remains after 0.47 mol of sodium phosphate reacts with 0.54 mol of magnesium chloride? (Just put in the number - don't put the units in the answer.) 2NaPO, (aq) + 3MgCl2 (aq) + 4NaCl(aq) + Mg3(PO4)2 (s)...
Question 38 2.5 pts Suppose 19.2 mL of 0.489 M HCl was used to titrate an...
Question 38 2.5 pts Suppose 19.2 mL of 0.489 M HCl was used to titrate an unknown sample of KOH (molar mass 56.11 g/mol). What mass of KOH was in the sample? The balanced chemical equation is: HCI + NaOH- NaCl + H20 O 0.114g O 0.527 g O 0.437 g 0 3.42 g
Question 27 3 pts In the limiting reactant" experiment, a mixture of 0.537 g of BaCl2...
Question 27 3 pts In the limiting reactant" experiment, a mixture of 0.537 g of BaCl2 (molar mass - 208 g/mol) and 0.884g Na2SO.(molar mass - 142 g/mol) is added to water and the precipitation reaction occurs in the solution BaCl2t39) + Na2SO4(aq) --> BaSO4(s) +2 NaCl (aq) Please calculate: 2) The limiting reactantis hint: limiting reactant: the reactant that is not enough in the amount please calculate the amount of one reactant from the amount of the other reactant...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass o...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. e See page 299 1st attempt i See Periodic Table Part 1 (0.5 point) Note that formulas of organic compounds should fhrst list the carbon and hydrogen with the rest...
dd to % Edit & Crea How many mL of 0.824 M HNO3 are needed to...
dd to % Edit & Crea How many mL of 0.824 M HNO3 are needed to react with 1.3 g of Hg,CI, Imolar mass = 472.08 g/mol)? HgCl2 +5HNO3 -> 2Hg(NO3)2(aq) + HNO2(aq) + 2HCl(aq) + H2O() Question 40 2 pts How many moles of NaF are in 0.134 L of a 2.89 M solution? 2 pts Question 41 Classify each of the following equations as total ionic, net ionic or molecular equations. Ba2+(aq) +CO2 (aq) + BaCO3(s) Na2CO3(aq) +...
Question 6 The molarity of a solution can be determined from o the number of mmoles...
Question 6 The molarity of a solution can be determined from o the number of mmoles of solute per milliliter of solution. o the number of moles of solute per kilogram of solution. o the number of moles of solute per kilogram of solvent. o the number of moles of solute per liter of the solvent D Question 7 Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield nitrogen gas and water. N2H4(lig)...
Question 39 2 pts How many mL of 0.583 M HNO3 are needed to react with...
Question 39 2 pts How many mL of 0.583 M HNO3 are needed to react with 2.5 g of Hg2Cl2 (molar mass = 472.08 g/mol)? Hg2Cl2 +5HNO3 +2Hg(NO3)2(aq) + HNO2(aq) + 2HCl(aq) + H2O(1)
4 % Edit & Create Question 29 2 pts Calculate the grams of Co, if you...
4 % Edit & Create Question 29 2 pts Calculate the grams of Co, if you have 3.79 x 1024 atoms of oxygen. Question 30 2 pts Which of the following is the isotope for the element represented by this? A3: Y, 210 U212 o 2215 130 X212 135 A 000 g w re to search P
O Thisis achemical Equation quest n/t rth 4 points / You have 4 of 4 a...
O Thisis achemical Equation quest n/t rth 4 points / You have 4 of 4 a ttempts remaining / There is a 15% attempt penalty 05 Question (4points) A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The combustion of 86.3 mg produced 234 mg of CO2 and 48.0 mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. 1st attempt Part 1 (2...
5. Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) →...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
4 Edit & C Question 33 2 pts How many moles of CO2 will be make from 19.9 g of propane (C3H8) with a molar mass of 44.10 g/mol? CzHg +502 3CO2 + 4H20 Question 34 2 pts How many mols of reactant remains after 0.47 mol of sodium phosphate reacts with 0.54 mol of magnesium chloride? (Just put in the number - don't put the units in the answer.) 2NaPO, (aq) + 3MgCl2 (aq) + 4NaCl(aq) + Mg3(PO4)2 (s)...
Question 38 2.5 pts Suppose 19.2 mL of 0.489 M HCl was used to titrate an unknown sample of KOH (molar mass 56.11 g/mol). What mass of KOH was in the sample? The balanced chemical equation is: HCI + NaOH- NaCl + H20 O 0.114g O 0.527 g O 0.437 g 0 3.42 g
Question 27 3 pts In the limiting reactant" experiment, a mixture of 0.537 g of BaCl2 (molar mass - 208 g/mol) and 0.884g Na2SO.(molar mass - 142 g/mol) is added to water and the precipitation reaction occurs in the solution BaCl2t39) + Na2SO4(aq) --> BaSO4(s) +2 NaCl (aq) Please calculate: 2) The limiting reactantis hint: limiting reactant: the reactant that is not enough in the amount please calculate the amount of one reactant from the amount of the other reactant...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. e See page 299 1st attempt i See Periodic Table Part 1 (0.5 point) Note that formulas of organic compounds should fhrst list the carbon and hydrogen with the rest...
dd to % Edit & Crea How many mL of 0.824 M HNO3 are needed to react with 1.3 g of Hg,CI, Imolar mass = 472.08 g/mol)? HgCl2 +5HNO3 -> 2Hg(NO3)2(aq) + HNO2(aq) + 2HCl(aq) + H2O() Question 40 2 pts How many moles of NaF are in 0.134 L of a 2.89 M solution? 2 pts Question 41 Classify each of the following equations as total ionic, net ionic or molecular equations. Ba2+(aq) +CO2 (aq) + BaCO3(s) Na2CO3(aq) +...
Question 6 The molarity of a solution can be determined from o the number of mmoles of solute per milliliter of solution. o the number of moles of solute per kilogram of solution. o the number of moles of solute per kilogram of solvent. o the number of moles of solute per liter of the solvent D Question 7 Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield nitrogen gas and water. N2H4(lig)...
Question 39 2 pts How many mL of 0.583 M HNO3 are needed to react with 2.5 g of Hg2Cl2 (molar mass = 472.08 g/mol)? Hg2Cl2 +5HNO3 +2Hg(NO3)2(aq) + HNO2(aq) + 2HCl(aq) + H2O(1)
4 % Edit & Create Question 29 2 pts Calculate the grams of Co, if you have 3.79 x 1024 atoms of oxygen. Question 30 2 pts Which of the following is the isotope for the element represented by this? A3: Y, 210 U212 o 2215 130 X212 135 A 000 g w re to search P
O Thisis achemical Equation quest n/t rth 4 points / You have 4 of 4 a ttempts remaining / There is a 15% attempt penalty 05 Question (4points) A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The combustion of 86.3 mg produced 234 mg of CO2 and 48.0 mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. 1st attempt Part 1 (2...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
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