Homework Answers
To balance a chemical equation count the number of atoms of each element on the both sides of a reaction and equalise them by adding suitable coefficients.
Balanced equation for this reaction is,
4NH3 + 3O2 ------------> 2N2 + 6H2O
4 moles of NH3 gives 2 moles of N2.
1 mole of NH3 will give 2/4 moles of N2 i.e. 0.5 moles of N2.
Number of moles = Mass/molar mass
Molar mass of NH3 =17.03 g/mol
Moles of NH3 = 38.7/17.03
= 2.27 moles
Moles of N2 formed = 2.27 × 0.5
= 1.14 moles N2.
Molar mass of N2 = 28.01 g/mol
Mass of N2 formed = 28.01 g/mol × 1.14 mol
= 31.9 grams.
Theoretical yield = 31.9 grams.
6. Percent yield = (actual yield/theoretical yield) × 100
Percent yield = (17.9/31.9)×100
= 56.11 %
Percent yield = 56.11 %
4. Ammonia reacts with oxygen to produce nitrogen and water. Balanced the chemical equation for the...
4. Ammonia reacts with oxygen to produce nitrogen and water. Balanced the chemical equation for the reaction. (2 pts) « NH3 + 3_027_N2 + 6 H2O 2.9 126 ö + 36 5. If 38.7 grams of NH3 react with excess oxygen, how many grams of nitrogen are produced (based on the balanced equation in question 4)? (6pts)
4. From the balanced chemical equation: N2 + 3H2 2 NH3 a) Determine the number moles of NHs produced from the complete reaction of 2.5 moles of H:? [Spts] b) Using the above chemical equation...
4. From the balanced chemical equation: N2 + 3H2 2 NH3 a) Determine the number moles of NHs produced from the complete reaction of 2.5 moles of H:? [Spts] b) Using the above chemical equation determine the number of grams of nitrogen gas (N2) produced when it reacts with 102 g of ammonia (NH3)? [5pts (UPON REQUEST)
4. From the balanced chemical equation: N2 + 3H2 2 NH3 a) Determine the number moles of NHs produced from the complete reaction...
Question 18 (2 points) Consider the following equation: N2+3 H2 2 NH3 How many grams of...
Question 18 (2 points) Consider the following equation: N2+3 H2 2 NH3 How many grams of ammonia are produced when 5.00 moles of nitrogen react? Show your calculation.
Example: 1 3 На 2 NH USE: N2 + a) If we need to produce eight moles of ammonia, how many moles of nitrogen and hydr...
Example: 1 3 На 2 NH USE: N2 + a) If we need to produce eight moles of ammonia, how many moles of nitrogen and hydrogen gases are required? b) If we need to produce eighty moles of ammonia, how many moles of nitrogen and hydrogen gases are required? Example: 2 3020) 2KCI(s)+ a) How many grams of KCl will be produced if 25.8 moles of potassium chlorate is heated? 2KCIO3) b) How many gram(s) of oxygen gas is produced...
22) Given that 4 NH3 +50,-- 4 NO:6 HO.if 3.00 mol NHy were made to react with excess of oxygen gas, the amount of H...
22) Given that 4 NH3 +50,-- 4 NO:6 HO.if 3.00 mol NHy were made to react with excess of oxygen gas, the amount of H2O formed would be: A) 4.50 mol B) 2.00 mol. C) 6.00 mol. D) 3.00 mol. E) none of the above 23) Which of the following statements is FALSE? A) The actual yield is the amount of product actually produced by a chemical reaction. B) The percent yield - Actual Yield Theoretical Yield"100 C) The limiting...
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Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
cal 22) Given that 4 NH3 5 O2-4 NO+6 HyO, if 3.00 mol NH3 were made to react with excess of 22) Oxygen gas, the amo...
cal 22) Given that 4 NH3 5 O2-4 NO+6 HyO, if 3.00 mol NH3 were made to react with excess of 22) Oxygen gas, the amount of H2O formed would be A) 4.50 mol. B) 2.00 mol. C) 6.00 mol. D) 3.00 mol. E) none of the above 23) Which of the following statements is FALSE? A) The actual yield is the amount of product actually produced by a chemical reaction. B) The percent yield- 23) Actual Yield Theoretical Yield...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got...
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...
Homework #7A Name: Due date: 3-16-20 1. How many moles of water, H20, contain 9.03 *...
Homework #7A Name: Due date: 3-16-20 1. How many moles of water, H20, contain 9.03 * 10molecules of water? 2. How many molecules are present in 4.9 moles of L,CO3. 3. How many moles of oxygen are present in 4.9 moles of L.COM 4. How many Li atoms are in 4.5 moles of Li? 5. Calculate the mass, in grams, for 3.75 10 molecules of C2Hs. 6. Calculate the mass, in grams, for 3.5 moles of CHO. 7. Calculate the...
4. Ammonia reacts with oxygen to produce nitrogen and water. Balanced the chemical equation for the reaction. (2 pts) « NH3 + 3_027_N2 + 6 H2O 2.9 126 ö + 36 5. If 38.7 grams of NH3 react with excess oxygen, how many grams of nitrogen are produced (based on the balanced equation in question 4)? (6pts)
4. From the balanced chemical equation: N2 + 3H2 2 NH3 a) Determine the number moles of NHs produced from the complete reaction of 2.5 moles of H:? [Spts] b) Using the above chemical equation determine the number of grams of nitrogen gas (N2) produced when it reacts with 102 g of ammonia (NH3)? [5pts (UPON REQUEST)
4. From the balanced chemical equation: N2 + 3H2 2 NH3 a) Determine the number moles of NHs produced from the complete reaction...
Question 18 (2 points) Consider the following equation: N2+3 H2 2 NH3 How many grams of ammonia are produced when 5.00 moles of nitrogen react? Show your calculation.
Example: 1 3 На 2 NH USE: N2 + a) If we need to produce eight moles of ammonia, how many moles of nitrogen and hydrogen gases are required? b) If we need to produce eighty moles of ammonia, how many moles of nitrogen and hydrogen gases are required? Example: 2 3020) 2KCI(s)+ a) How many grams of KCl will be produced if 25.8 moles of potassium chlorate is heated? 2KCIO3) b) How many gram(s) of oxygen gas is produced...
22) Given that 4 NH3 +50,-- 4 NO:6 HO.if 3.00 mol NHy were made to react with excess of oxygen gas, the amount of H2O formed would be: A) 4.50 mol B) 2.00 mol. C) 6.00 mol. D) 3.00 mol. E) none of the above 23) Which of the following statements is FALSE? A) The actual yield is the amount of product actually produced by a chemical reaction. B) The percent yield - Actual Yield Theoretical Yield"100 C) The limiting...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
cal 22) Given that 4 NH3 5 O2-4 NO+6 HyO, if 3.00 mol NH3 were made to react with excess of 22) Oxygen gas, the amount of H2O formed would be A) 4.50 mol. B) 2.00 mol. C) 6.00 mol. D) 3.00 mol. E) none of the above 23) Which of the following statements is FALSE? A) The actual yield is the amount of product actually produced by a chemical reaction. B) The percent yield- 23) Actual Yield Theoretical Yield...
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...
Homework #7A Name: Due date: 3-16-20 1. How many moles of water, H20, contain 9.03 * 10molecules of water? 2. How many molecules are present in 4.9 moles of L,CO3. 3. How many moles of oxygen are present in 4.9 moles of L.COM 4. How many Li atoms are in 4.5 moles of Li? 5. Calculate the mass, in grams, for 3.75 10 molecules of C2Hs. 6. Calculate the mass, in grams, for 3.5 moles of CHO. 7. Calculate the...
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