An unknown solid did not melt by 160 degree Celsius and did not dissolve in water....
Homework Answers
Ionic compounds generally dissolves in water and dissociates into ions brcause of polarity. for example NaCl dissolves in water and gives Na+ and Cl- ions.
Nonpolar covalent compounds does not dissolve in water like oil and benzene.
So answer is it is an covalent nonpolar compound.
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unknown solid did not melt by 160 degree Celsius and did not
dissolve in water....
7. How much Sodium Chloride will dissolve in 50g of 80 degree celsius water? (read grapl...
7. How much Sodium Chloride will dissolve in 50g of 80 degree celsius water? (read grapl to get grams solut water at 80 degrees and set up a ratio for 50g of water)
A unknow compound was found to have an experiment melting point , MPexp, of 126.0-130.2 degree...
A unknow compound was found to have an experiment melting point , MPexp, of 126.0-130.2 degree Celsius.Assume the thermometer in the experiment was pre -calibrated to read accurate temperature.(a) .Comment on the purity of the unknow. Briefly explain. (b) . Achemist is given a list of possible identities for the solid unknown. which is the likely identity? Explain your decision. Compound melting point. A 87.5-88.5 degree Celsius B 125.5-127.0 degree Celsius C 132.5-134.5 degree celsius
Data i got: 1g of solid acid=0.51706 ml 50 ml of water used to dissolve 0.5...
Data i got:
1g of solid acid=0.51706 ml
50 ml of water used to dissolve
0.5 ml of indicator added to acid solution
8.52 ml of 1M NaOH titrated from burrete into acid
solution.
The virtual lab stockroom contains NaOH, water and an unknown solid weak acid. Perform experiments to identify the pka and molar mass of the bottle of unknown solid acid. You may enter your answer in the form below the Virtual Lab NOTE: You can submit your...
6. Suppose you are told that a particular solid has a high melting point. What other...
6. Suppose you are told that a particular solid has a high melting point. What other information would you need about the properties of the solid in order to distinguish whether that solid is a covalent network solid, a metallic solid, or an ionic solid? Explain your reasoning.
6. Suppose you are told that a particular solid has a high melting point. What other...
6. Suppose you are told that a particular solid has a high melting point. What other information would you need about the properties of the solid in order to distinguish whether that solid is a covalent network solid, a metallic solid, or an ionic solid? Explain your reasoning. 1
in advance thank you! Post-Lab Worksheet 1. Do you think a dry sample of solid rubidium...
in advance thank you!
Post-Lab Worksheet 1. Do you think a dry sample of solid rubidium fluoride would conduct electricity? Why or why not? A scientist tested an unknown solid compound, and made the following observations: • • A sample of the unknown compound dissolved in water. The solution of the unknown compound in water conducted electricity A separate sample of the unknown compound dissolved in hexane. A dry sample of the unknown compound had a melting point of 750°C....
Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2...
Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2 Trial 1 42.SI3 Mass of test tube and stopper Mass of stoppered test tube and metal Mass of calorimeter Mass of calorimeter and water Mass of water Mass of metal Initial temperature of water in calorimeter Initial temperature of metal Equilibrium temperature of metal and water in calorimeter 38.394g 53 13 g 63 to2g 0o C water (inal-onitiat oC oC Imetal qwater Specific heat of...
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0...
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
thank you in advance!!! 2. What does soluble mean? 3. You can test whether something is soluble in water by putti...
thank you in advance!!!
2. What does soluble mean? 3. You can test whether something is soluble in water by putting a little in water and observing what happens. If you try this with two different substances, one of which is soluble, and one of which isn't, what differences will you be looking for? 4. Define polar covalent compounds. Give an example. 4. Define polar covalent compounds. Give an example. 5. Define non-polar covalent compounds. Give an example. 6. How...
- A student is trying to identify an unknown solid based on its melting point. She...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°C. Knowing it is possible for there to be impurities in the sample, is this compound more likely to be camphor or hydroquinone. Explain your reasoning. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting point of this newly formed compound to be 163-178°C. If...
7. How much Sodium Chloride will dissolve in 50g of 80 degree celsius water? (read grapl to get grams solut water at 80 degrees and set up a ratio for 50g of water)
Data i got:
1g of solid acid=0.51706 ml
50 ml of water used to dissolve
0.5 ml of indicator added to acid solution
8.52 ml of 1M NaOH titrated from burrete into acid
solution.
The virtual lab stockroom contains NaOH, water and an unknown solid weak acid. Perform experiments to identify the pka and molar mass of the bottle of unknown solid acid. You may enter your answer in the form below the Virtual Lab NOTE: You can submit your...
6. Suppose you are told that a particular solid has a high melting point. What other information would you need about the properties of the solid in order to distinguish whether that solid is a covalent network solid, a metallic solid, or an ionic solid? Explain your reasoning.
6. Suppose you are told that a particular solid has a high melting point. What other information would you need about the properties of the solid in order to distinguish whether that solid is a covalent network solid, a metallic solid, or an ionic solid? Explain your reasoning. 1
in advance thank you!
Post-Lab Worksheet 1. Do you think a dry sample of solid rubidium fluoride would conduct electricity? Why or why not? A scientist tested an unknown solid compound, and made the following observations: • • A sample of the unknown compound dissolved in water. The solution of the unknown compound in water conducted electricity A separate sample of the unknown compound dissolved in hexane. A dry sample of the unknown compound had a melting point of 750°C....
Data and Results: Calorimetry A. Specific Heat: Unknown metal number Unknown solid number Trial 2 Trial 1 42.SI3 Mass of test tube and stopper Mass of stoppered test tube and metal Mass of calorimeter Mass of calorimeter and water Mass of water Mass of metal Initial temperature of water in calorimeter Initial temperature of metal Equilibrium temperature of metal and water in calorimeter 38.394g 53 13 g 63 to2g 0o C water (inal-onitiat oC oC Imetal qwater Specific heat of...
5. 1.024 g of an unknown molecular solid are dissolved in enough
water to produce 200.0 mL of solution. The osmotic pressure at 25C
is 278.0 torr. What is the molar mass of the solid?
6a. Calculate the van't Hoff factor of a 0.085M potassium
sulfate solution that has an osmotic pressure of 5.4atm at
25C
5. 1.024 g of an unknown molecular solid are dissolved in enough water to produce 200.0 ml. of solution. The osmotic pressure at 25...
thank you in advance!!!
2. What does soluble mean? 3. You can test whether something is soluble in water by putting a little in water and observing what happens. If you try this with two different substances, one of which is soluble, and one of which isn't, what differences will you be looking for? 4. Define polar covalent compounds. Give an example. 4. Define polar covalent compounds. Give an example. 5. Define non-polar covalent compounds. Give an example. 6. How...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°C. Knowing it is possible for there to be impurities in the sample, is this compound more likely to be camphor or hydroquinone. Explain your reasoning. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting point of this newly formed compound to be 163-178°C. If...
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