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7. a. (1/2 pt) Which one of the following salts is expected to...
Consider the following compounds: BeF 2. CaCl2, and MgCl). Answer the following questions based on expected...
Consider the following compounds: BeF 2. CaCl2, and MgCl). Answer the following questions based on expected periodic trends: (a) Which is expected to have the shortest ionic bonds? (b) Which is expected to have the highest lattice energy? (c) Which is expected to have the lowest melting point?
Part 1 Observe the interactions between one water moles water molecule with ethane. Within un describe...
Part 1 Observe the interactions between one water moles water molecule with ethane. Within un describe 13. What is the intermolecular force that hold Briefly explain your answer. thin your clecule and each of the ons in NaCl Now observe one oup, describe what happens. holds Hotecther with an individual ion (either Na or CI) 14. Use your kit to assess whether you know about the actual solubility of NaCl in water to assess whether NaCl can dissolve in H.O....
Consider the molecule below: o=s=o: Select ALL the intermolecular forces that are expected to be present...
Consider the molecule below: o=s=o: Select ALL the intermolecular forces that are expected to be present between two of these molecules. Select as many answers as are applicable, however points will be deducted for incorrect guesses. Select one or more: Dispersion forces Dipole/dipole forces Hydrogen bonding Check What amount of thermal energy (in kJ) is required to convert 136 g of ice at -16 °C completely to water vapour at 217 °C? The melting point of water is 0°C and...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of the intermolecular forces that would occur between the molecules of acetone and the molecules of 2- propanone if you have a mixture of the two liquids. What would be the main type of IMF that is responsible for the attraction? (Give a name for the IMF). c). The pentane molecule and the 2-pentanone molecule both have five carbon atoms on their structures. Why 2-pentanone...
1. Which one of the following salts forms aqueous solutions with pH = 7? (Circle the...
1. Which one of the following salts forms aqueous solutions with pH = 7? (Circle the correct answer) a) FeCl3 b) KBr c) LiClO2 d) NH4NO3 e) Na2CO3 2. Calculate the pH of a 0.150M solution of sodium acetate (NaC2H302) at 25°C. (Ka for acetic acid HC2H302 is 1.8 x 10-5)
1. (5 pt.) Soon you will synthesize the analgesic acetanilide in lab. It’s m.p. is 114C....
1. (5 pt.) Soon you will synthesize the analgesic acetanilide in lab. It’s m.p. is 114C. What does it indicate about your product if you obtain a m.p. of 103 - 112C. Explain. 2. (6 pt.) Neither aniline nor nitrobenzene is particularly water soluble. However, one is completely soluble in dilute aqueous HCl. Which one is soluble, and explain why? (For maximum credit, provide a chemical equation for your answer.) 3. (5 pt.) Name the two adsorbents that are most...
QUESTION 1 Which answer choice shows the following molecules in order from the highest boiling point...
QUESTION 1 Which answer choice shows the following molecules in order from the highest boiling point to lowest boiling point? Molecule 1 Molecule 2 Molecule 3 Molecule 2 > Molecule 3 > Molecule 1 Molecule 3 > Molecule 2 > Molecule 1 Molecule 1 > Molecule 3 > Molecule 2 Molecule 2 > Molecule 1 > Molecule 3 QUESTION 2 Acetanilide hasa maling point of 113 114'C. What is mostly to be the melting point of acetanilidified with bec acid...
please answer questions 1 & 2 If the following mixtures are incubated at 37°C with the...
please answer questions 1 & 2
If the following mixtures are incubated at 37°C with the addition of enzymes and/or bile salts, predict if the mixtures would increase in acidity and, if so, which samples increased the most. If the lipids are not digested to a great extent, there would be little change in acidity. Table 5: Testing after incubation with pancreatin or pancreatin and bile salts Test tube Substance Enzyme Prediction of drops of NaOH solution to neutralize (no...
Please Explain: 1. Predict the products for each of the following chemical reactions. a. CaCl2(aq) +...
Please Explain: 1. Predict the products for each of the following chemical reactions. a. CaCl2(aq) + Na2SO4(aq) → ____________( ) + ____________( ) b. KOH(aq) + HCN(aq) → ____________( ) + ____________( ) c. HBr(aq) + NaHCO3(aq) → __________( ) +__________( ) +__________( ) 2. Which of the following compounds are likely to be soluble in water? Circle your answer(s). ammonium carbonate chromium(III) hydroxide cobalt(III) sulfide lead(II) nitrate lead(II) sulfate magnesium carbonate sodium iodide zinc chloride
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular fo...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
Consider the following compounds: BeF 2. CaCl2, and MgCl). Answer the following questions based on expected periodic trends: (a) Which is expected to have the shortest ionic bonds? (b) Which is expected to have the highest lattice energy? (c) Which is expected to have the lowest melting point?
Part 1 Observe the interactions between one water moles water molecule with ethane. Within un describe 13. What is the intermolecular force that hold Briefly explain your answer. thin your clecule and each of the ons in NaCl Now observe one oup, describe what happens. holds Hotecther with an individual ion (either Na or CI) 14. Use your kit to assess whether you know about the actual solubility of NaCl in water to assess whether NaCl can dissolve in H.O....
Consider the molecule below: o=s=o: Select ALL the intermolecular forces that are expected to be present between two of these molecules. Select as many answers as are applicable, however points will be deducted for incorrect guesses. Select one or more: Dispersion forces Dipole/dipole forces Hydrogen bonding Check What amount of thermal energy (in kJ) is required to convert 136 g of ice at -16 °C completely to water vapour at 217 °C? The melting point of water is 0°C and...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of the intermolecular forces that would occur between the molecules of acetone and the molecules of 2- propanone if you have a mixture of the two liquids. What would be the main type of IMF that is responsible for the attraction? (Give a name for the IMF). c). The pentane molecule and the 2-pentanone molecule both have five carbon atoms on their structures. Why 2-pentanone...
1. Which one of the following salts forms aqueous solutions with pH = 7? (Circle the correct answer) a) FeCl3 b) KBr c) LiClO2 d) NH4NO3 e) Na2CO3 2. Calculate the pH of a 0.150M solution of sodium acetate (NaC2H302) at 25°C. (Ka for acetic acid HC2H302 is 1.8 x 10-5)
QUESTION 1 Which answer choice shows the following molecules in order from the highest boiling point to lowest boiling point? Molecule 1 Molecule 2 Molecule 3 Molecule 2 > Molecule 3 > Molecule 1 Molecule 3 > Molecule 2 > Molecule 1 Molecule 1 > Molecule 3 > Molecule 2 Molecule 2 > Molecule 1 > Molecule 3 QUESTION 2 Acetanilide hasa maling point of 113 114'C. What is mostly to be the melting point of acetanilidified with bec acid...
please answer questions 1 & 2
If the following mixtures are incubated at 37°C with the addition of enzymes and/or bile salts, predict if the mixtures would increase in acidity and, if so, which samples increased the most. If the lipids are not digested to a great extent, there would be little change in acidity. Table 5: Testing after incubation with pancreatin or pancreatin and bile salts Test tube Substance Enzyme Prediction of drops of NaOH solution to neutralize (no...
INTERMOLECULAR FORCES INTRODUCTION LEARNING OBJECTIVES To relate the effecet of intermolecular forces on relative melting points and vapour pressures of some organic substances THEORY Weak attractive forces that occur between individual molecules in substances are called intermolecular forces. These include London dispersion forces, dipole-dipole forces and hydrogen-bonding forces. Collectively, the three types of intermolecular forces are referred to as Van der Waals forces. These attractive forces are much weaker than the chemical bonds between atoms in a molecule. Note that...
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