Homework Answers
The Color of an object is determined by the color of the light it absorbs . Every substance absorbs the light of a particular color and then emit (reflects) the light of complementary color to the absorbed color .
Complementary color are the colors which combines to form white light . e.g. yellow-violet , green-red , orange-blue are complementary colours .
Grass appears green beacuse grass absorbed light of red color from the visible spectrum and emitted the light complementary to red i.e. green light and thus grass appeared green .
So color of the object is determined by the color of the light absorbed , appearance color is complementary to the absorbed color .
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Atomic Spectroscopy 37 pMonrca Sauha Cuz 10-8-14 Date Name Laboratory Partner Pre-Laboratory Assignment In this experiment...
EXPERIMENT #9: EMISSION SPECTROSCOPY PRE-LAB NAME DATE STD # SEQUENCE # 1. When electricity is passed...
EXPERIMENT #9: EMISSION SPECTROSCOPY PRE-LAB NAME DATE STD # SEQUENCE # 1. When electricity is passed through gases such as hydrogen or neon, certain colors are emitted. What occurs in an atom to produce these colors? 2. (a) Calculate the frequency (v) of light that has a wavelength) of 3.00 x 104 cm. (Show calculation) (b) Calculate the energy of this light wave. (Show calculation) 3. State TWO differences between light from a laser and light from a flashlight 4....
NAME SECTION DATE TECH 711/Using Nuclear Magnetic Resonance Spectroscopy. to Identify an unknown Compound Pre-Laboratory Assignment...
NAME SECTION DATE TECH 711/Using Nuclear Magnetic Resonance Spectroscopy. to Identify an unknown Compound Pre-Laboratory Assignment 1. Briefly define the following terms: (a) chemical shift (b) spin-spin coupling (c) coupling constant 2. Using an appropriate reference, draw the structure of 4-propoxybenzaldehyde. 3. Predict the splitting pattern for each kind of proton in the 'H NMR spectra of the following molecules: CH3CH2CH2Br (CH3)2CH-O -OCCH3 COCH GHz CH3 TCCH HỌC-C-o-CH, CH3 (d)
Name Lab Section Date PRE-LABORATORY ASSIGNMENT 1. Which of the chemicals used in this experiment have...
Name Lab Section Date PRE-LABORATORY ASSIGNMENT 1. Which of the chemicals used in this experiment have safety hazards associated with them? List the safety hazards for each chemical. This butto e variables shows the op left of th h to 330 ni 2. Define the following, and give a specific example of each. a. strong acid motometer Teads%T. chamber If a cuve b. weak acid in the sam Look at t the top mber whe ur cuvett c. Strong base...
Date: Name: Experiment 10: Solubility Product PRE-LABORATORY QUESTIONS 1. Write the net ionic equilibrium equation for...
Date: Name: Experiment 10: Solubility Product PRE-LABORATORY QUESTIONS 1. Write the net ionic equilibrium equation for the dissolution of KHC.H06 in water. 2. Write the solubility product constant expression for KHC4H406. 3. Why is it not necessary to record the exact mass of KHT placed into the flasks? 4. The solubility of calcium oxalate, CaC204, is 4.8x10 mol/L. What is its Ksp? 5. The solubility product constant for MgF2 is 3.4x10-1. What is its solubility?
Name T, day's Date Partner Instructor Section Pre-Laboratory Assignment Complete prclab questions prior to lalbs. Prelab...
Name T, day's Date Partner Instructor Section Pre-Laboratory Assignment Complete prclab questions prior to lalbs. Prelab questions will be collected before the prelab ecrure. All answers must be handw ritton neatly. Show all cakculations. A student measured the absorbance, A, of a solution of FeSCN and obtained the following vahcs: 1. Sample ti A 0.356 Is onc.) What is the ratio of concentrations of these two samples? Sampke 2 A 0.0545 directly proportional o, inversely proportional to cecentrabon? (Grck FeSCN...
Pre-Lab Assignment. Experiment: Determination of Unknown compounds Name (please print) Section Date You have a set...
Pre-Lab Assignment. Experiment: Determination of Unknown compounds Name (please print) Section Date You have a set of 5 bottles with "unknown" ionic compounds: Lead Il acetate, Formula: Potassium iodide, Formula:_ Sodium chloride, Formula: Mercury i chioride, Fermia Hg cho Silver nitrate, Formula: P Mercury Il chloride, Formula: - but you don't know which is in which bottle. Your mission is to determine which compound is in which bottle 1. An essential part of your "detective work is to predict and...
NAME: DATE SECTION Pre-lab Assignment: Qualitative Analysis 1. Please fill in the following chart with predicted...
NAME: DATE SECTION Pre-lab Assignment: Qualitative Analysis 1. Please fill in the following chart with predicted solid reaction products for the series of anions and cations listed in this experiment. When reporting these products, be sure to include their correct chemical formula and the color that you would expeet to observe upon solid formation. Indicate by NR that no detectable reaction or precipitate will be formed. If there is no reaction DO NOT write a product. You may want to...
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to...
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to deterimine the specific heats of two differert metals by calorimetry method of mixtures. Calorimeter, steam generator (boiler) and tripod stand, Bunsen burner and lighter, triple beam balance, two 0-100 °C thermometers, unknown metal no. 1, unknown metal no. 2, stand with horizontal rod. DIAGRAM . Add water to the boiler until it is approximately two thirds full. Place it on the tripod. Place the...
Please help with this chemistry lab question ATOMIC EMISSION SPECTROSCOPY ADVANCED STUDY ASSIGNMENT Name Section Date...
Please help with this chemistry lab question
ATOMIC EMISSION SPECTROSCOPY ADVANCED STUDY ASSIGNMENT Name Section Date This assignment MUST be completed before the laboratory period begins. Wavelength values for the hydrogen emission spectrum are required for the experiment. A few answers have been provided for you. You may wish to verify some of these to ensure that your calculation methods and signifcant digits are correct. 1. Calculate energy values for the first SIX hydrogen energy levels usings En =-RH/n--(2.179 x10-18J/n2...
Laboratory Date - Name Section Experiment 9-Pre-lab Questions 1. Balance the following reactions Fe(s) +_ _0.6)...
Laboratory Date - Name Section Experiment 9-Pre-lab Questions 1. Balance the following reactions Fe(s) +_ _0.6) F0,0,00 CH, +_ _068) C0,68) +- H,01 NH, 8) + _0.) → NO(g) + H.0(g) C,H,OH() +0.18) H,018) in aluminum (Al) powder, which burns in oxygen (0.) to produce a 2. Toy sparklers often contain aluminum (Al) wide (ALO.) and gives of a bright white light. The balanced reaction is num 4 Al(s) + 30,() +2 A1,0,0) only 2 moles of Al are available...
EXPERIMENT #9: EMISSION SPECTROSCOPY PRE-LAB NAME DATE STD # SEQUENCE # 1. When electricity is passed through gases such as hydrogen or neon, certain colors are emitted. What occurs in an atom to produce these colors? 2. (a) Calculate the frequency (v) of light that has a wavelength) of 3.00 x 104 cm. (Show calculation) (b) Calculate the energy of this light wave. (Show calculation) 3. State TWO differences between light from a laser and light from a flashlight 4....
NAME SECTION DATE TECH 711/Using Nuclear Magnetic Resonance Spectroscopy. to Identify an unknown Compound Pre-Laboratory Assignment 1. Briefly define the following terms: (a) chemical shift (b) spin-spin coupling (c) coupling constant 2. Using an appropriate reference, draw the structure of 4-propoxybenzaldehyde. 3. Predict the splitting pattern for each kind of proton in the 'H NMR spectra of the following molecules: CH3CH2CH2Br (CH3)2CH-O -OCCH3 COCH GHz CH3 TCCH HỌC-C-o-CH, CH3 (d)
Name Lab Section Date PRE-LABORATORY ASSIGNMENT 1. Which of the chemicals used in this experiment have safety hazards associated with them? List the safety hazards for each chemical. This butto e variables shows the op left of th h to 330 ni 2. Define the following, and give a specific example of each. a. strong acid motometer Teads%T. chamber If a cuve b. weak acid in the sam Look at t the top mber whe ur cuvett c. Strong base...
Date: Name: Experiment 10: Solubility Product PRE-LABORATORY QUESTIONS 1. Write the net ionic equilibrium equation for the dissolution of KHC.H06 in water. 2. Write the solubility product constant expression for KHC4H406. 3. Why is it not necessary to record the exact mass of KHT placed into the flasks? 4. The solubility of calcium oxalate, CaC204, is 4.8x10 mol/L. What is its Ksp? 5. The solubility product constant for MgF2 is 3.4x10-1. What is its solubility?
Name T, day's Date Partner Instructor Section Pre-Laboratory Assignment Complete prclab questions prior to lalbs. Prelab questions will be collected before the prelab ecrure. All answers must be handw ritton neatly. Show all cakculations. A student measured the absorbance, A, of a solution of FeSCN and obtained the following vahcs: 1. Sample ti A 0.356 Is onc.) What is the ratio of concentrations of these two samples? Sampke 2 A 0.0545 directly proportional o, inversely proportional to cecentrabon? (Grck FeSCN...
Pre-Lab Assignment. Experiment: Determination of Unknown compounds Name (please print) Section Date You have a set of 5 bottles with "unknown" ionic compounds: Lead Il acetate, Formula: Potassium iodide, Formula:_ Sodium chloride, Formula: Mercury i chioride, Fermia Hg cho Silver nitrate, Formula: P Mercury Il chloride, Formula: - but you don't know which is in which bottle. Your mission is to determine which compound is in which bottle 1. An essential part of your "detective work is to predict and...
NAME: DATE SECTION Pre-lab Assignment: Qualitative Analysis 1. Please fill in the following chart with predicted solid reaction products for the series of anions and cations listed in this experiment. When reporting these products, be sure to include their correct chemical formula and the color that you would expeet to observe upon solid formation. Indicate by NR that no detectable reaction or precipitate will be formed. If there is no reaction DO NOT write a product. You may want to...
NAME DATE LAB PARTNER . EXPERIMENT 7 뎐 OBJECT The object of this experiment is to deterimine the specific heats of two differert metals by calorimetry method of mixtures. Calorimeter, steam generator (boiler) and tripod stand, Bunsen burner and lighter, triple beam balance, two 0-100 °C thermometers, unknown metal no. 1, unknown metal no. 2, stand with horizontal rod. DIAGRAM . Add water to the boiler until it is approximately two thirds full. Place it on the tripod. Place the...
Please help with this chemistry lab question
ATOMIC EMISSION SPECTROSCOPY ADVANCED STUDY ASSIGNMENT Name Section Date This assignment MUST be completed before the laboratory period begins. Wavelength values for the hydrogen emission spectrum are required for the experiment. A few answers have been provided for you. You may wish to verify some of these to ensure that your calculation methods and signifcant digits are correct. 1. Calculate energy values for the first SIX hydrogen energy levels usings En =-RH/n--(2.179 x10-18J/n2...
Laboratory Date - Name Section Experiment 9-Pre-lab Questions 1. Balance the following reactions Fe(s) +_ _0.6) F0,0,00 CH, +_ _068) C0,68) +- H,01 NH, 8) + _0.) → NO(g) + H.0(g) C,H,OH() +0.18) H,018) in aluminum (Al) powder, which burns in oxygen (0.) to produce a 2. Toy sparklers often contain aluminum (Al) wide (ALO.) and gives of a bright white light. The balanced reaction is num 4 Al(s) + 30,() +2 A1,0,0) only 2 moles of Al are available...
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