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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?

H J K L Enter V B N M Shift Chapter 2 An Introduction to the Chemistry of Life 37 SELF-QUIZ: TESTING YOUR KNOWLEDGE 1. Each atom has a nucleus made up of р. 24. 2. In atoms, the number of protons is usually equal to the number of 3. The atomic number of an atom is equal to the number of 7. Proteins and carbohydrates consist primarily of carbon, hydrogen, and oxygen; these two molecules are types of and neutrons. -compounds. p. 31. 8. On the pH scale, a pH of is neutral; a solution with a pH less than this is this is 9. Chemicals like bicarbonate that resist pH change are called р. 25. and a solution with a pH greater than р. 32, in the nucleus. p. 26. 4 An alternative form of an atom is called an differs in the number of neutrons in the nucleus. p. 26. 5. A bond formed between two atoms that share electrons is called it p. 33. 10. When water molecules dissociate, they form and ions. p. 32. bond. p. 28. bonds form between oppositely charged atoms of a(n) polar covalent bonds of…

a. What instrument was used to discover the structure of DNA? b. What shape was expected from the instruments output? VWhy? c. Who were the four main scientists involved in discovering the structure of DNA? d. What did you notice about the process of science represented in the video? Name at least three things that you noticed. Edit View Insert Format Tools Table 12pt v Paragraph v BI Address DELL F4 F5 F6 F7 F8 F9 F10 F11 II 88888: $ & 4. 6. 7

I need answer expert solutions and step by step

I need help completing this I just need the formula and names of each box, there are some that I did.

Background 1234|5| C12H22O11 + O₂ CO₂ + H₂O Mg(OH)2 + H₂SO4 MgSO4 + H₂O NaOH + CuSO4 -Na2SO4 + Cu(OH)2 CH2 + Oz = H2O + CO2 Fe + 0₂ Fe₂O3 Mg3(PO4)2 + H₂ Mg + H3PO4 NH4NO3-N₂O + H₂O Cl₂ + KBr KCI + Br₂ ck to add speaker notes % 5 A 6 D 7 Ö * 8 ( 16 17 | )

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PLEASE Answer within 20-30 minutes. Thank you!

HDPE and PS are both inert to bases and acids, which plastic would you rather chose to put 1 Liter of 6M HCl for general chemistry lab? Explain why.

Chlorophyll absorbs photons strongly in two bands, one between 340 and 450 nm and the other between 650 and 680 nm. Chlorophyll collects and transfers the photon energy to fix CO2 into carbohydrate CH2O units according to CO2 + H2O → (CH2O) + O2 where the (CH2O) indicates one carbon unit of the carbohydrate. The average enthalpy change for the addition of a carbon unit to a carbohydrate is ΔH = 485 kJ/mol. What is the minimum number of 660 nm photons needed by chlorophyll to add a carbon unit to a carbohydrate? (Remember that there’s no such thing as a partial photon.) Please no copy paste

Chlorophyll absorbs photons strongly in two bands, one between 340 and 450 nm and the other between 650 and 680 nm. Chlorophyll collects and transfers the photon energy to fix CO2 into carbohydrate CH2O units according to CO2 + H2O → (CH2O) + O2 where the (CH2O) indicates one carbon unit of the carbohydrate. The average enthalpy change for the addition of a carbon unit to a carbohydrate is ΔH = 485 kJ/mol. What is the minimum number of 660 nm photons needed by chlorophyll to add a carbon unit to a carbohydrate? (Remember that there’s no such thing as a partial photon.) Please no copy paste from anywhere

4) But the real angler continues, regardless of the local sage. What sort of tone does the author create by using the connotative effects of the word sage in paragraph 6? The word "sage" is used primarily as a joke, gently mocking the fishing guide who cannot force fish to A) appear or guarantee good fishing to a paying customer. Primarily, the author is creating None of awe or B) respect for the great wisdom and power that the Eiminate sage, or fishing guide, holds in his mind. The author is being highly critical, even condemning. of the ignorance of these so-called "sages who can't help fisherman catch fish. The word sage" in this context has no connotaive D) effect on the tone or meaning of this entire passage.

Document1 - Word Search (Alt+Q) References Mailings Review View Help Write the corresponding letters to the following descriptions. Each proposal can be associated with 0 or 1 match and each letter is not necessarily associated with a proposal. a. [Ar] 4s? b. 1s 2s2p63s23p3 c. 1s2s2p2 d. [Ne] 3s23ps e. [Ar] 4s23d10 f. 1s22s! g. None of those answers 1. I am a halogen 2. I am a transition metal 3. I am alkaline 4. I have exactly 2 single electrons 5. I am the smallest of the atoms presented here 6. I have exactly 3 valence electrons 7.I am the most paramagnetic of the atoms presented here 8. I am the copper 9.I am isoelectronic with Ti2+ IF cessibility: Good to go IA 16 SIS

I understand this answer, but it wasn't one of the multiple choices they gave me.

Which one is it?

Please answer the following question:

How did you decide on the wavelength at which you will read the absorbance of the diluted solutions? What is the importance of reading the absorbance of diluted solutions at λmax? What will vary if you chose a wavelength 20 nm lower or higher than your chosen wavelength? (Minimum of 8 sentences)

2. What is the role of the fixer in black and white photography?

24

Just part b!!!