Homework Answers
1. a) Mg(Magnesium) burns very brightly producing a bright light, which can cause loss of sight temporarily. It also produces a large amount of heat, which may cause burns.
b) 2 M HCl is corrosive, strong and concentrated acid. It can damage materials upon contact, cause serious eye and respiratory irritation upon inhalation.
c) H2 gas is highly flammable and explosive, creates an oxygen deficient environment and causes breathing difficulty.
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Pre-Lab Questions 1. Describe the hazards associated with each of the materials listed below. (2 points...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should be able to answer the Before b following questions. Give an example, other than Redox reaction: Co the ones listed in this experiment, of redox and metathesis reactions. metathesis: NaCl (aq) + AgNO3(aq)-ma(s), Nakoaap ,. When will reactions proceed to completion? Define percent yield in general terms. iclI is the ratio of actua vied to the . theoretical yield. % yield'actual.ficidx Theoretical yield 4....
In lab Review Lecture 8 Name 2 points for each answer Lab, morning noon afternoon Define...
In lab Review Lecture 8 Name 2 points for each answer Lab, morning noon afternoon Define an exothermic reaction. 1. 2. Does breaking a chemical bond require energy or give off energy? Is it endothermic or exothermic? Define the term entropy 3. 4. Write the equilibrium equation for the following reaction NH,NO, (s) N,O (g) + 2 H,O (g) For the reaction in question 4, what would be the change in the concentrations of reactants 5. and products if %...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
15 Post-Lab Suction Number DATA: For each of the following, a) write the products as appropriate,...
15 Post-Lab Suction Number DATA: For each of the following, a) write the products as appropriate, b) identify the reaction type e) describe your observations, including whether the reaction was endothermic or exothermic. 1. Na,CO,(aq) CaCl,(ag) Type: Observations 2. HCKaq)+ Mg(s) Type Observations: Type: Observations: 4. Ca(NO,),(aq)+Na S(aq) Type: Observations 5. CuSO,(aq)+ Zn,(s) 5 | Chemical Reactions: Post-Lab 69
Pre-lab Study Questions 1. Calculate the enthalpy of reaction DHrxno for each of the following reactions using the t...
Pre-lab Study Questions 1. Calculate the enthalpy of reaction DHrxno for each of the following reactions using the tabulated standard enthalpy of formation DHfo. (Show calculation) a. H2O(g) ® H2O(l) b. CaCO3(s) ® CaO(s) + CO2(g) c. CH4(g) + 2 O2(g) ® CO2(g) + 2 H2O(g) 2. Consider the following reaction and the given standard enthalpy of formation DHfo. NH4NO3(s) ® NH4+(aq) + NO3-(aq) DHfo (kJ/mol) -365.6 -132.0 -205.0 a. Calculate the enthalpy of reaction DHrxno for the above reaction...
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the...
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the appropriate precautions to be taken. a. Ba(NO), b. 1 M HCl c. Pb(NO), d. KSCN 2. Discuss the difference between qualitative and quantitative analysis, Which type is utilized in this exercise? Postlab Questions A student studied some reactions involving P C and N ons. First, the student reacted the individual metal cations with 1 M HCl and 1 M NaOH solutions. The student then...
Which of the following is incorrect for the reaction below? 6 1^- (aq) + 4 H_2O(1)...
Which of the following is incorrect for the reaction below? 6 1^- (aq) + 4 H_2O(1) + 2 MnO_4^- (aq) rightarrow 3 1_2 (aq) + 2MnO_2(s) + 8 OH^- (aq) The iodide ion serves as the reducing agent. The manganese in the MnO^-_4 ion has an oxidation state of +7. The oxygen and hydrogen atoms do not change oxidation state in this reaction. The manganese in MnO_2(s) has an oxidation state of +4. lodine has an oxidation state of +...
Balance the following reactions and label the type of reaction. POST-LAB PROBLEMS Balance the following reactions an...
Balance the following reactions and label the type of
reaction.
POST-LAB PROBLEMS Balance the following reactions and label the type of reaction. 1. Reaction Type Balance Chemical Reaction CaCO, CaO Co, a. Fe CuSO,(n Cu b. FeSO, 4 (a) Al O2 AlO, C. Na SO BaC NaCl d. BaSO, + 4() CH CO, H,O е. + 2 (g) HCI NaOH (aq) но, f. NaCl KNO, РЫ, * _Pb(NO) KI (ag) 2 (a) 3 (ag) 2 (ag) K,SO H,O H_SO КОН...
For each chemical reaction listed in the table below, decide whether the highlighted atom is being...
For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced highlighted atom is being... reaction neither oxidized reduced oxidized nor alo reduced 41 IF() + SiO2(s) → SiF4(g)+ 2 H 20(9) Cu SO 4(aq) + Zn(s) → ZnSO4(aq)+ Cu(s) CH4(g)+ H2O(g) → CO(g) +3 H2(g) 2 H 2(g)+02(g) → 2 H2O(g) Ar
Multiple Choice - Circle the correct answer below each question (3 points cach) 1. Which of...
Multiple Choice - Circle the correct answer below each question (3 points cach) 1. Which of the following would you expect to have the highest boiling point? a F b. CI: CBE c. All of the above have the same boiling point 2. For which one of the following reactions is AH run equal to the heat of formation of the product? a. N2(g) + 3H2(g) - 2NH; (g) b. %N () + O2(g) - NO: () c. 6C(s) +...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should be able to answer the Before b following questions. Give an example, other than Redox reaction: Co the ones listed in this experiment, of redox and metathesis reactions. metathesis: NaCl (aq) + AgNO3(aq)-ma(s), Nakoaap ,. When will reactions proceed to completion? Define percent yield in general terms. iclI is the ratio of actua vied to the . theoretical yield. % yield'actual.ficidx Theoretical yield 4....
In lab Review Lecture 8 Name 2 points for each answer Lab, morning noon afternoon Define an exothermic reaction. 1. 2. Does breaking a chemical bond require energy or give off energy? Is it endothermic or exothermic? Define the term entropy 3. 4. Write the equilibrium equation for the following reaction NH,NO, (s) N,O (g) + 2 H,O (g) For the reaction in question 4, what would be the change in the concentrations of reactants 5. and products if %...
Experiment #9: Heats of Reaction Pre-Lab Questions Name Date Lab Mamal helps in answering the following questions 1. A reaction in which heat is absorbed is called a. Endothermic b. Exothermic c. Cooling d. Heating 2. A reaction where heat is released is called a. Endothermic b. Exothermic c. Cooling d. Heating 3. The energy change of a reaction that occurs at constant pressure is called the a. Total energy change b. Work c. Heat of reaction d pressure 4....
15 Post-Lab Suction Number DATA: For each of the following, a) write the products as appropriate, b) identify the reaction type e) describe your observations, including whether the reaction was endothermic or exothermic. 1. Na,CO,(aq) CaCl,(ag) Type: Observations 2. HCKaq)+ Mg(s) Type Observations: Type: Observations: 4. Ca(NO,),(aq)+Na S(aq) Type: Observations 5. CuSO,(aq)+ Zn,(s) 5 | Chemical Reactions: Post-Lab 69
Prelab Questions 1. Briefly describe the hazards associated with each of the following chemicals and the appropriate precautions to be taken. a. Ba(NO), b. 1 M HCl c. Pb(NO), d. KSCN 2. Discuss the difference between qualitative and quantitative analysis, Which type is utilized in this exercise? Postlab Questions A student studied some reactions involving P C and N ons. First, the student reacted the individual metal cations with 1 M HCl and 1 M NaOH solutions. The student then...
Which of the following is incorrect for the reaction below? 6 1^- (aq) + 4 H_2O(1) + 2 MnO_4^- (aq) rightarrow 3 1_2 (aq) + 2MnO_2(s) + 8 OH^- (aq) The iodide ion serves as the reducing agent. The manganese in the MnO^-_4 ion has an oxidation state of +7. The oxygen and hydrogen atoms do not change oxidation state in this reaction. The manganese in MnO_2(s) has an oxidation state of +4. lodine has an oxidation state of +...
Balance the following reactions and label the type of
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