Homework Answers
1. Rubidium Fluoride or RbF is ionic compound as it produces ions in aqueous medium. Ionic compounds conducts electricity when dissolves in water. But in dry condition they does not acts as conductor of electricity.
So dry sample of Rubidium Fluoride would not conduct electricity as does not produce ions in dry state and ions are the conductors of electricity not compound so it will be neutral to current.
2. The third observation is an error. The separate sample of unknown compound dissolves in hexane
3. Explanation: If the sample dissolves in water and conducts electricity the compounds must be inorganic and high melting point confirms it. Hexane is organic nonpolar solvent and inorganic water soluble compounds does not dissolves in it.
4. The sample is ionic compound .
5. The sample of unknown compound is ionic because
Firstly, The compound soluble in water and conducts electricity. This is only possible for ionic compound as they can dissociates in ions in water which conducts electricity.
Secondly, inorganic or ionic compound generally have high melting point like the sample does.
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Post-Lab Worksheet 1. Do you think a dry sample of solid rubidium...
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plz try to give all the answers. In the reducing sugar exercise, why do you think...
plz
try to give all the answers.
In the reducing sugar exercise, why do you think the time that the samples are in the hot water bath not exceed two minutes? In the starch exercise, why must you shake the positive control and each of the unknowns before taking a sample of each? 2. 3. What structure, within proteins, does the biuret reagent actually react with when it gets reduced giving positive result? 4. Now that you have completed all...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record...
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PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification let...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification letter. Gently dry the inside of the calorimeter and weigh it. If the calorimeter is not dry, you will not be able to accurately find the mass of water in your calorimeter. Add about 50 mL of distilled water and weigh again. Measure the water's initial temperature. Use a plastic weighing "boat" set to zero on the balance and use it to...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature...
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Please help with my question !! Thank you in advance :) c. What will determine whether a compound, such as O2, will have a net movement into or out of the cell? In which direction do you think the dif...
Please help with my question
!!
Thank you in advance :)
c. What will determine whether a compound, such as O2, will have a net movement into or out of the cell? In which direction do you think the diffusion occurs in the body? Why?
c. What will determine whether a compound, such as O2, will have a net movement into or out of the cell? In which direction do you think the diffusion occurs in the body? Why?
Experiment Properties of Solutions 112/ Roll No. Name: Section:__ Date: Post-lab Questions 1. Did you observe...
Experiment Properties of Solutions 112/ Roll No. Name: Section:__ Date: Post-lab Questions 1. Did you observe a difference in conductivity of deionized water and tap water. If yes, explain why there is a difference 2. What was the conductivity of solid sodium chloride? What was the conductivity of the mixture when water was added to the salt? Explain your observations 3. Indicate whether solutions of each of the following contain (a) only ions, (b) only molecules, or (c) mostly molecules...
plz
try to give all the answers.
In the reducing sugar exercise, why do you think the time that the samples are in the hot water bath not exceed two minutes? In the starch exercise, why must you shake the positive control and each of the unknowns before taking a sample of each? 2. 3. What structure, within proteins, does the biuret reagent actually react with when it gets reduced giving positive result? 4. Now that you have completed all...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification letter. Gently dry the inside of the calorimeter and weigh it. If the calorimeter is not dry, you will not be able to accurately find the mass of water in your calorimeter. Add about 50 mL of distilled water and weigh again. Measure the water's initial temperature. Use a plastic weighing "boat" set to zero on the balance and use it to...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification letter. Gently dry the inside of the calorimeter and weigh it. If the calorimeter is not dry, you will not be able to accurately find the mass of water in your calorimeter. Add about 50 mL of distilled water and weigh again. Measure the water's initial temperature. Use a plastic weighing "boat" set to zero on the balance and use it to...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature change upon the addition of the hot solid object be larger or smaller than the temperature change you observed? Explain. 2. Your instructor handed you a 1-L sample of a liquid and asked you to determine its specific heat. How would you determine the specific heat of the liquid using the equipment in this lab? 3. What effect would not covering the calorimeter cup...
Please help with my question
!!
Thank you in advance :)
c. What will determine whether a compound, such as O2, will have a net movement into or out of the cell? In which direction do you think the diffusion occurs in the body? Why?
c. What will determine whether a compound, such as O2, will have a net movement into or out of the cell? In which direction do you think the diffusion occurs in the body? Why?
Experiment Properties of Solutions 112/ Roll No. Name: Section:__ Date: Post-lab Questions 1. Did you observe a difference in conductivity of deionized water and tap water. If yes, explain why there is a difference 2. What was the conductivity of solid sodium chloride? What was the conductivity of the mixture when water was added to the salt? Explain your observations 3. Indicate whether solutions of each of the following contain (a) only ions, (b) only molecules, or (c) mostly molecules...
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