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(c ) Explain the difference between the 227°C melting point of tin(ll) chloride and the -33°C...
what is the difference between these melting points? The melting point of diamond, C. is >...
what is the difference between these melting points?
The melting point of diamond, C. is > 3800 K. The melting point of carbon tetrachloride, CCL4, is 250 K. Explain the difference in melting points between these two substances.
Methylene chloride has a melting point of - 94.8°C, a boiling point of 40.0°C, a specific...
Methylene chloride has a melting point of - 94.8°C, a boiling point of 40.0°C, a specific heat of 1.21 J/g *K for the solid and liquid, and 0.608 J/g*K for the gas. The heats of fusion and vaporization are ΔHfus of 73.40 J/g, and ΔHvap of 334.35 J/g respectively. Determine how many joules of energy are needed to heat 40 grams of methylene chloride from -171.4 ° F to 333 K. Draw out and label your heating curve. This will...
(1 point) A 90% confidence interval for the difference between the means of two independent populations...
(1 point) A 90% confidence interval for the difference between the means of two independent populations with unknown population standard deviations is found to be (-0.2, 5.4). Which of the following statements is/are correct? CHECK ALL THAT APPLY. A. The standard error of the difference between the two observed sample means is 2.6. B. A two-sided two-sample t-test testing for a difference between the two population means is rejected at the 10% significance level. C. A two-sided two-sample t-test testing...
Q1) Plot a schematic of density vs temperature for water around it’s melting point between -15...
Q1) Plot a schematic of density vs temperature for water around it’s melting point between -15 and 15 degrees Celsius, from observing the simulation. Do the same for Oxygen around it’s melting temperature between -200 and -230 degrees Celsius (Oxygen melts at -218 C). Explain briefly how the difference between oxygen and water makes water particularly uniq
Macros III. Physical Properties 10 pts 10. Place the compounds below in order of increasing melting...
Macros III. Physical Properties 10 pts 10. Place the compounds below in order of increasing melting point. Briefly explain your reasoning VELHO d) e) f) f) 11. Place the same compounds in order of increasing polarity. Briefly explain your reasoning 12. Dichloromethane (methylene chloride CH2C12) is which of the following: i. Water immiscible and more dense than water il Water miscible and more dense than water ili. Water miscible and less dense than water iv. Water immiscible and less dense...
4. Using an appropriate diagram, briefly explain the difference between the [a] work done by a...
4. Using an appropriate diagram, briefly explain the difference between the [a] work done by a system during a multi-stage irreversible and reversible expansion. Menggunakan rajah yang bersesuaian, terangkan secara ringkas perbezaan antara kerja yang dilakukan oleh suatu sistem somasa pengembangan berbilang bagi peringkat berbalik dan tidak berbalik. (30 marks/markah) [b Calculate the standard entropy change of the following reaction at 727 °C. Kira perubahan entropi piawai bagi tindak balas berikut pada suhu 727 °C 2.Ai+3/2 0.Al,0, A S 313.26...
Predict which pure substance will have the lower melting point, baking soda (NaHCO,) or phonol (C,H,OH)?...
Predict which pure substance will have the lower melting point, baking soda (NaHCO,) or phonol (C,H,OH)? Explain your answer Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help higher Phenol will have the compound melting point. The baking soda is an type of attractive force present, so is predicted to have a weakest and has the melting point lower strongest aromatic lonic
6. Which of the following compounds will have higher boiling point? a)CH CH2CH2OH b)CH,CH2CH2CH.CH c)HOCH CH2OH 7....
6. Which of the following compounds will have higher boiling point? a)CH CH2CH2OH b)CH,CH2CH2CH.CH c)HOCH CH2OH 7. What is the difference between alkane, alkene and alkyne? 8. Which of the following compound can participate in hydrogen bonding? i. 2-propanol Acetic acid ii. The side chain of serine iv. The side chain of phenylalanine a. i and il b. i only c. Iiland ly d. and iv 9. Rotation around each C-C bond is not possible for which compound? a. Propanol-2...
33) What is the overall charge of the amino acid, alanine, at pH 10? 33) B)-1...
33) What is the overall charge of the amino acid, alanine, at pH 10? 33) B)-1 D) No overall charge 34) As applied to the chemistry of amino acids, what is the definition for the isoelectric 34) point? A) The pH at which the amino acid exists primarily in its neutral form. B) The pH at which the amino acid exists primarily in its acidic form. C) The pH at which the amino acid exists as a mixture of isomers....
which fatty acid is unsaturated Lipids b. Which fatty acid is unsaturated? c. The melting point...
which fatty acid is unsaturated
Lipids b. Which fatty acid is unsaturated? c. The melting point of stearic acid is 70°C, and that of oleic acid is 4°C. Explain the difference. From the results of experiment C, how can you tell which is more unsaturated, oleic acid or steari d. acid? 04. How does omitting triethanolamine affect the properties and appearance of the hand lotion? Q5. How does omitting stearic acid affect the properties and appearance of the hand lotion?...
what is the difference between these melting points?
The melting point of diamond, C. is > 3800 K. The melting point of carbon tetrachloride, CCL4, is 250 K. Explain the difference in melting points between these two substances.
(1 point) A 90% confidence interval for the difference between the means of two independent populations with unknown population standard deviations is found to be (-0.2, 5.4). Which of the following statements is/are correct? CHECK ALL THAT APPLY. A. The standard error of the difference between the two observed sample means is 2.6. B. A two-sided two-sample t-test testing for a difference between the two population means is rejected at the 10% significance level. C. A two-sided two-sample t-test testing...
Macros III. Physical Properties 10 pts 10. Place the compounds below in order of increasing melting point. Briefly explain your reasoning VELHO d) e) f) f) 11. Place the same compounds in order of increasing polarity. Briefly explain your reasoning 12. Dichloromethane (methylene chloride CH2C12) is which of the following: i. Water immiscible and more dense than water il Water miscible and more dense than water ili. Water miscible and less dense than water iv. Water immiscible and less dense...
4. Using an appropriate diagram, briefly explain the difference between the [a] work done by a system during a multi-stage irreversible and reversible expansion. Menggunakan rajah yang bersesuaian, terangkan secara ringkas perbezaan antara kerja yang dilakukan oleh suatu sistem somasa pengembangan berbilang bagi peringkat berbalik dan tidak berbalik. (30 marks/markah) [b Calculate the standard entropy change of the following reaction at 727 °C. Kira perubahan entropi piawai bagi tindak balas berikut pada suhu 727 °C 2.Ai+3/2 0.Al,0, A S 313.26...
Predict which pure substance will have the lower melting point, baking soda (NaHCO,) or phonol (C,H,OH)? Explain your answer Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help higher Phenol will have the compound melting point. The baking soda is an type of attractive force present, so is predicted to have a weakest and has the melting point lower strongest aromatic lonic
6. Which of the following compounds will have higher boiling point? a)CH CH2CH2OH b)CH,CH2CH2CH.CH c)HOCH CH2OH 7. What is the difference between alkane, alkene and alkyne? 8. Which of the following compound can participate in hydrogen bonding? i. 2-propanol Acetic acid ii. The side chain of serine iv. The side chain of phenylalanine a. i and il b. i only c. Iiland ly d. and iv 9. Rotation around each C-C bond is not possible for which compound? a. Propanol-2...
33) What is the overall charge of the amino acid, alanine, at pH 10? 33) B)-1 D) No overall charge 34) As applied to the chemistry of amino acids, what is the definition for the isoelectric 34) point? A) The pH at which the amino acid exists primarily in its neutral form. B) The pH at which the amino acid exists primarily in its acidic form. C) The pH at which the amino acid exists as a mixture of isomers....
which fatty acid is unsaturated
Lipids b. Which fatty acid is unsaturated? c. The melting point of stearic acid is 70°C, and that of oleic acid is 4°C. Explain the difference. From the results of experiment C, how can you tell which is more unsaturated, oleic acid or steari d. acid? 04. How does omitting triethanolamine affect the properties and appearance of the hand lotion? Q5. How does omitting stearic acid affect the properties and appearance of the hand lotion?...
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