Homework Answers
To perform this calculation, it is necessary to know the mass of CuO that will react, after that, a simple mathematical operation is performed to know the amount of moles that react:
Moles Reaction = CuO Mass / Molar Mass CuO = CuO Mass / 79,545 g / mol Simply substitute the CuO Mass in the previous operation.
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Question 8 10 pts From the Chemical Reaction Types and their Equations lab: The black powder...
What was the change in mass of the contents in the crucible? Compare the mass after...
What was the change in mass of the contents in the crucible? Compare the mass after healing to the mass before heating The color change of the copper (II) carbonate hydroxide hydrate as it was heated can help identify the product. Use the following list of copper compounds to identify the product. CuCO_3 - light green powder Cu(OH)_2 - blue green powder Cu_2 O - reddish brown crystals CuO - Mack powder Given that mass was lost from the copper...
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POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
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6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
5) How many moles of hydrogen gas are needed to react with oxygen to form one...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
19) Iron is produced from its one by the reactions 2 C O 2 Fe:O )...
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What was the change in mass of the contents in the crucible? Compare the mass after healing to the mass before heating The color change of the copper (II) carbonate hydroxide hydrate as it was heated can help identify the product. Use the following list of copper compounds to identify the product. CuCO_3 - light green powder Cu(OH)_2 - blue green powder Cu_2 O - reddish brown crystals CuO - Mack powder Given that mass was lost from the copper...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
Date: Period: Name: You Try... 4. Given the following chemical equation 4P + 50; → 2 PO (a) How many moles of P,0, are formed from 3.4 moles of O,? SHOW the math below (b) How many moles of P are needed to react with 30,1 moles of O,? SHOW the math below. 5. Aluminum reacts with copper(ll) chloride to make aluminum chloride and copper (a) Write the balanced equation (b) Given 6 moles of Cuch, how many moles of...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
19) Iron is produced from its one by the reactions 2 C O 2 Fe:O ) CO 2 es 3COAR) How many moles of Ol) are needed to produce 1 mole of Fe(s)? a) 1/2 mole o 1/4 moto 1 mole O d) 3/2 moleo 20) Iron (1) sulfate reacts with potassium hydroxide in aqueous solution to form a precipitate. The net lonic equation for this reaction is: a) Fel. 50. Feso, 2 50, SO. c)Fe +20 Feco ). d)...
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