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Post lab questions: 1. Draw a cooling curve for water to change the physical state from...
Post lab questions: 1. Draw a cooling curve for water to change the physical state from...
Post lab questions: 1. Draw a cooling curve for water to change the physical state from gaseous phase of water to its solid phase. COS aos-liquid o oxgos-lie condences liquid temperature Solid-liquid 00000 00000 Solid time 2. What is the heat, q, required to melt 10 grams of ice in a) Joules b) calories? a) 9-mXHF 10GX 334 5/4= 33405
Draw a cooling diagram of water from 125 C to -15 C. Be specific and label...
Draw a cooling diagram of water from 125 C to -15 C. Be specific and label each axis, each phase, and each phase change.
+ Heating and Cooling Curves Constants Periodic Table Consider heating solid water (ice) until it becomes...
+ Heating and Cooling Curves Constants Periodic Table Consider heating solid water (ice) until it becomes liquid and then gas (steam). (Figure 1) Alternatively consider the reverse process, cooling steam until it becomes water and, finally, ice. (Figure 2) In each case, two types of transitions occur, those involving a temperature change with no change in phase (shown by the diagonal line segments on the graphs) and those at constant temperature with a change in phase (shown by horizontal line...
POST LAB QUESTIONS. 1. If you used more water in your calorimeter, would the observed temperature...
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...
POST-LAB QUESTIONS Show all work for full credit 1. Physical and chemical properies are not exactly...
POST-LAB QUESTIONS Show all work for full credit 1. Physical and chemical properies are not exactly the same as physical and chemical changes. Explain the differences. 2. When an acid is added to sodium bicarbonate, CO, gas is formed. When dry ice sublimes Co,gas is formed. One process is chemical and the other is physical. Explain 4 Physical vs. Chemical- You Decide: Post-Lab
Post-Lab Questions .. Formic acid is completely soluble in water. Draw the structural formula of the...
Post-Lab Questions .. Formic acid is completely soluble in water. Draw the structural formula of the water. the molecule as it is in Sodium hydroxide, NaOH, is added and the pH raised to 12. What happens to the acid in this solution? Draw the structural formula of the formic acid as it exists at pH 12 b. c Hydrochloric acid, HCL, is now added and the pht lowered to 2 Draw the structural formula of Write structures for the five...
Post-Lab Questions 1 In this lab activity, you observed the phenomenon of supercooling. Why does a...
Post-Lab Questions 1 In this lab activity, you observed the phenomenon of supercooling. Why does a supercooled liquid increase in temperature as it starts to freeze? Why doesn't it just stay at the supercooled temperature as it freezes? (Hint: Think about the enthalpy of the phase change.)
Post Lab Questions Fermentation: 1. What physical property enables one to use distillation for the separation...
Post Lab Questions Fermentation: 1. What physical property enables one to use distillation for the separation of ethyl alcohol enriched from the water mixture? 2 What is an Azeotrope? Explain how can azeotropes be used to purify mixtures? 3. Azeotropes are also defined as liquid mixtures having a vapor pressure at constant temperature, as a function of composition. Explain with your own words why vapor pressure depends on the composition of the mixture. 4 If the distillation temperature is different...
Post Lab Questions 1. Suggest how you might make "honey" from table sugar. 2. Draw the...
Post Lab Questions 1. Suggest how you might make "honey" from table sugar. 2. Draw the structure of a segment of an amylose molecule, and then show the reaction with water to break the acetal bonds. 3. What type of monosaccharide polymerizes to form inulin? 4. On the basis of today's experiment, suggest a way to determine whether a compound is amylose or inulin. 5. Compare the product that would be obtained from hydrolysis of a 50:50 mixture of inulin...
please !! ........ .... POST-LAB Questions: 1- A bag permeable to water but not to salts...
please !!
........ .... POST-LAB Questions: 1- A bag permeable to water but not to salts contains a 5% salt solution. This bag is immersed into a beaker containing a 7% salt solution. a- In what directions does water move? b- When the movement of water is going to stop?
Post lab questions: 1. Draw a cooling curve for water to change the physical state from gaseous phase of water to its solid phase. COS aos-liquid o oxgos-lie condences liquid temperature Solid-liquid 00000 00000 Solid time 2. What is the heat, q, required to melt 10 grams of ice in a) Joules b) calories? a) 9-mXHF 10GX 334 5/4= 33405
+ Heating and Cooling Curves Constants Periodic Table Consider heating solid water (ice) until it becomes liquid and then gas (steam). (Figure 1) Alternatively consider the reverse process, cooling steam until it becomes water and, finally, ice. (Figure 2) In each case, two types of transitions occur, those involving a temperature change with no change in phase (shown by the diagonal line segments on the graphs) and those at constant temperature with a change in phase (shown by horizontal line...
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...
POST-LAB QUESTIONS Show all work for full credit 1. Physical and chemical properies are not exactly the same as physical and chemical changes. Explain the differences. 2. When an acid is added to sodium bicarbonate, CO, gas is formed. When dry ice sublimes Co,gas is formed. One process is chemical and the other is physical. Explain 4 Physical vs. Chemical- You Decide: Post-Lab
Post-Lab Questions .. Formic acid is completely soluble in water. Draw the structural formula of the water. the molecule as it is in Sodium hydroxide, NaOH, is added and the pH raised to 12. What happens to the acid in this solution? Draw the structural formula of the formic acid as it exists at pH 12 b. c Hydrochloric acid, HCL, is now added and the pht lowered to 2 Draw the structural formula of Write structures for the five...
Post-Lab Questions 1 In this lab activity, you observed the phenomenon of supercooling. Why does a supercooled liquid increase in temperature as it starts to freeze? Why doesn't it just stay at the supercooled temperature as it freezes? (Hint: Think about the enthalpy of the phase change.)
Post Lab Questions 1. Suggest how you might make "honey" from table sugar. 2. Draw the structure of a segment of an amylose molecule, and then show the reaction with water to break the acetal bonds. 3. What type of monosaccharide polymerizes to form inulin? 4. On the basis of today's experiment, suggest a way to determine whether a compound is amylose or inulin. 5. Compare the product that would be obtained from hydrolysis of a 50:50 mixture of inulin...
please !!
........ .... POST-LAB Questions: 1- A bag permeable to water but not to salts contains a 5% salt solution. This bag is immersed into a beaker containing a 7% salt solution. a- In what directions does water move? b- When the movement of water is going to stop?
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