Polarity Fall 2021 Prachi Patel

1A1: Integrate existing knowledge of ionic/covalent bonding, lone pairs, formal charge, valence, and Lewis structures to generate chemically-correct organic building blocks. Examine the given line-angle structure and redraw it, correcting all errors of structure (bonding, lone pairs, formal charge, valence, and the octet rule). 14 H3C. CI- H3C CH3 O H3C B-CH3 N-CH3 CH3

Determine the structures of the molecules described in the following problems. Also note, in the combustion of N containing compounds, N2(g)  is made.   Using your understanding of bond enthalpies, predict the enthalpy change associated with the conversion of the amino acid lysine to cadaverine (and any other by-products of the reaction). You will need to have a balanced chemical reaction to do this. Assume that the reaction occurs in the gas phase.

Dangerous Paint Stripper Jessica has a summer job working for the city parks program. She has been using a cleaner called “Graffiti Gone” to remove graffiti from the bathrooms. She has to take a lot of breaks, because the chemical makes her throat burn. It also makes her feel dizzy sometimes, especially when the bathrooms don’t have very many windows. On the label, she sees that the cleaner has methylene chloride in it. She feels like she’s managing to get the work done, but she is worried about feeling dizzy. She wants to find out more about this chemical, what harm it can cause, and whether there are safer ways to do this work. Questions for following story. 1. What went right in this situation? 2. What went wrong in this situation? 3. What steps should be taken in this workplace to make sure employees are better protected and prepared the next time?

I need help with the second part, C3H5Cl3. Thanks!

For the Lewis acid-base reaction: Draw the skeletal structure of the product(s) for the Lewis acid-base reaction. Include lone pairs and formal charges (if applicable) on the structures. Click and drag to start drawing a structure. For the Lewis acid-base reaction: + __ Al

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been added to carbon. (The suffix hydrate from the Greek word hydor ("water") means "compound formed by the addition of water.") The actual chemical structure of carbohydrates doesn't look anything like water molecules bonded to carbon atoms (see sketch at right). But it is nevertheless possible to chemically extract all the hydrogen and oxygen from many simple carbohydrates as water, leaving only carbon behind. If you search the Internet for "reaction of sulfuric acid and sugar" you will find some impressive videos of this. Suppose you had (200. g) of ordinary table sugar, which chemists call sucrose, and which has the chemical formula C12H₂2011. Calculate the maximum mass of water you could theoretically extract. Be sure your answer has alunit symbol, and round it to 3 significant digits. 0 HO CH₂OH OH OH OH The actual chemical structure of glucose.

The name carbohydrate comes from the fact that many simple sugars have chemical formulae that look like water has simply been added to carbon. (The suffix hydrate from the Greek word hydor ("water") means "compound formed by the addition of water.") The actual chemical structure of carbohydrates doesn't look anything like water molecules bonded to carbon atoms (see sketch at right). But it is nevertheless possible to chemically extract all the hydrogen and oxygen from many simple carbohydrates as water, leaving only carbon behind. If you search the Internet for "reaction of sulfuric acid and sugar" you will find some impressive videos of this. Suppose you had  300.g  of ordinary table sugar, which chemists call sucrose, and which has the chemical formula  C12H22O11 . Calculate the maximum mass of water you could theoretically extract. Be sure your answer has a unit symbol, and round it to the correct number of significant digits.

Dear expert, would you mind to writing the answer very clearly, because sometimes it is very difficult to read handwriting. Thank you.

Determine the structures of the missing organic molecules in the following reaction: H+ 뿜 XI + H₂O H+ Y Z Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X, Y, and Z. You may draw the structures in any arrangement that you like, so long as they aren't touching. Molecule X shows up in multiple steps, but you only have to draw its structure once. Click and drag to start drawing a structure. X Ś

Used widely prior to the end of the 20th Century, chlorofluorocarbons (CFCS for short) were widely used as refrigerants for both industrial and household applications. One CFC, called Freon-11 (fluorotrichloromethane) is an organic compound that has been classified as an ozone depleting substance owing to its propensity to break down via a free radical process. It has a chemical formula of CFCl. Carefully examine the structural diagram of Freon-11 then click on its MOST polar bond. F C. CI CI CI Selected Coordinates Clear «< Question 20 of 29 8 9. 11 delete U 11 K M

SCH4U-Unit 3 Assignment-2023 1. Calculate AH for the reaction: HCl(g) + NaNO2(s)→ HNO2(1) + NaCl(s) using the following data: Reaction 2NaCl(s) + H₂O(1)→ 2HCI(g) + Na₂O(s) NO(g) + NO₂(g) + Na₂O(s)→ 2NaNO₂(s) NO(g) + NO₂(g) →N₂O(g) + O2(g) 2HNO2(1)→→ N₂O(g) + O2(g) + H₂O(1) ΔΗ(kJ) 382.0 -601.0 -40.0 Page 2 of 6 29.0 2. A 5.81g sample of quinone, C6H4O2, was burned in excess oxygen in a calorimeter. The heat capacity of the calorimeter is calibrated to 4.24 kJ/°C. Calculate the molar enthalpy of combustion if the temperature of the calorimeter increased from 17.0 °C to 38.0 °C.

5. Acetone and 2-propanol are chemically interconvertible. Reduction (by the addition of the equivalent of H2) of acetone yields 2-propanol. Conversely, oxidation (by the removal of the equivalent of H2) of 2-propanol yields acetone. Is the evaporation data for these substances the same or different? If different, can you account for why this may be the case from a comparison of the Lewis structures of each substance and the IMFs present in each substance? Explain.

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. chemical symbol, substance chemical formula boiling point or Lewis structure Ar (Choose one) A В Cr (Choose one) v H H. H. H - C - C - ) - C H (Choose one) | H H H. H H - C -H D :N - O - H (Choose one) ♥ Н—С — Н ? :0 : :

For this discussion activity, please respond to the following question: Combustion requires three primary components: fuel, energy, and an oxidizer. The fuel is the organic starting material and once the activation energy is achieved, large amounts of energy are rapidly released fragmenting reactants into individual atoms. The components quickly rearrange into smaller and more stable molecules. Oxygen serves as an oxidizer, due to its electronegativity, accepting electrons and forming products including water and carbon dioxide. Nitroguanidine (CH4N402) is used in select fertilizers and more commonly as a component to propel munitions. Suppose a field artillery soldier was calculating how much nitroguanidine was needed to propel a round. The soldier would need to consider the desired volume of gas to displace along the gun tube and the ambient operating conditions. a. Predict the reaction products for the detonation of 1 mole of nitroguanidine. b. Calculate the amount of explosive…

O.002015 mol 4. For the acid in Option do the following: HO,CCH,C H2 CH,CO2H a) Draw a Lewis structure of the acid and mark the acidic hydrogen(s) with an asterisk (*). (Hint: Organic acids, those composed of C. H. and 0, will have the partial structure "HO2C-" or "-CO2H" written in the formula, In these cases, both oxygens are bonded to the carbon and the hydrogen is bonded to one of the oxygen atoms) b) Draw a structure of the conjugate base of the acid you drew in 4a) c) Draw a structure of the conjugate base of the species for which you drew a structure in 4b) d) Which of the structures you've draw above (4a, 4b, or 4c) can act as both an acid and a base? Write appropriate chemical equations to explain your answer. Xavier University of Louisiana 176

Draw the attraction between a water molecule and a molecule of PCl3 First, draw one molecule and add the partial charges where needed - use the ΔEN to determine the types of bonds.  Then, draw the second molecule so that the δ+ on one molecule lines up across from the δ- on the other.  Since we can't draw the molecules here you will answer questions about the drawings that you made on the homework worksheet. PCl3 has  ________ bonds with a ΔEN =  ________ . PCl3 has 4 REDs and is symmetrical/asymmetrical (answer is  ___________ ) making it a polar/nonpolar (answer is  ___________ ) molecule. Each Cl has a  __________ charge and the P has a  __________ charge.   H2O has 2  ________ bonds with a ΔEN =  +__________ .   H2O has 4 REDs and is symmetrical/asymmetrical (answer is  _________ ) making it a polar/nonpolar (answer is  __________ ) molecule.   Each H has a  ___________ charge and the O has a  _________ charge.   The strongest possible attractive force between these two molecules…

3 Need Help with the following chemistry problems, thank you!

18 please

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. chemical symbol, chemical formula or Lewis structure substance boiling point dh A NO (Choose one) 0 :0: H H C-C-– H (Choose one) 8 H. :0: H-C-N– H (Choose one) e N2 (Choose one) e D Check Explanation O 2022 McGraw ill LLC. All Rights Reserved. Terms of Use I Privacy Center / Accessibility MacBook Air %23 3 4. Y U I D

PART 3: Use Lewis dot structures to show the covalent bonding in the following pairs of elements. Once you have determined the structure for the molecule, write its structural formula in the space provided; use a dash to represent a shared pair of electrons, and dots to show unshared electrons. 1) nitrogen triiodide (NI3) Final Answer: Show work here.HINT: nitrogen is in the middle! 2) carbon tetrabromide (CBr4) Show work here.HINT: carbon is in the middle! 3) dihydrogen monoxide (H2O) Show work here.HINT: oxygen is in the middle!

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Draw the attraction between a water molecule and a molecule of NF3 First, draw one molecule and add the partial charges where needed - use the ΔEN to determine the types of bonds.  Then, draw the second molecule so that the δ+ on one molecule lines up across from the δ- on the other.  Since we can't draw the molecules here you will answer questions about the drawings that you made on the homework worksheet. NF3 has  ____________ bonds with a ΔEN =  ____________ .   NF3 has 4 REDs and is symmetrical/asymmetrical (answer is  ________ ) making it a polar/nonpolar (answer is __________ ) molecule.   Each F has a  ______________ charge and the N has a  ________ charge.   H2O has 2 ___________ bonds with a ΔEN =  ___________ .   H2O has 4 REDs and is symmetrical/asymmetrical (answer is ___________ . ) making it a polar/nonpolar (answer is _________ ) molecule.   Each H has a  _____________ charge and the O has a ____________ charge.   The strongest possible attractive force between these two…

Given the following data: 2 H₂(g) + O₂(g) → 2 H₂O(g) C₂H4(g) + 3 O₂(g) → 2 CO₂(g) + 2 H₂O(g) 2 CzHo(g) +7 Oz(9) → 4 CO,(g) + 6 H20(g) calculate AH for the reaction C₂H₂(g) + H₂(g) → C₂H₂(g). kJ ΔΗ = −484 kJ AH-1323 kJ ΔΗ = -2857 kJ

Answer the questions in the table below about the shape of the phosgene (COCI₂) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) X Ś