1b. You also wish to make 200mL of a 0.02 mg/mL solution. (Hint: NEW V2. and C2). Calculate the two different ways to make this solution. Volume Stock 200mL of 0.02mg/mL from 1g/ml stock 200mL of 0.02mg/mL from 100mg/ml stock Final Volume D.F.

classify the molecules of interest (i.e. para-aminophenol, acetaminophen, phenacetin) in increasing order of polarity? Rationalize these observations based on molecular interactions.

e) emulsifiers are pretty important compounds for daily life, externally and internally to us humans. Describes the two parts of an emulsifier molecule, and how most emulsifiers work and what they actually do.

I tried this and got it wrong

Which of the following can complete the reaction below? O Br2/FeBr3 O NBS/(PhCO2)2 O H2SO4 in boling water O H₂, Pt, Ethanol at 130 atm. ?

7. Which of the following would behave as a hydrogen bond acceptor, but not a hydrogen bond donor? H H:0: H I || | Н-с-с-с-н H :0: H ннн ннн Н-с-с-с—Н Н-с-с-с-о- Н-с-с-с-N-H ннн H ннн нннн

Select the single best answer. Intramolecular forces of attraction are often important in holding large molecules together. For example, some proteins fold into compact shapes, held together by attractive forces between nearby functional groups. A schematic of a folded protein is shown below, with the protein backbone indicated by a blue-green ribbon, and various appendages drawn dangling from the chain. What type of intramolecular force occurs at site B? E NH, CH, -HOCH;- O=C H-N hydrogen bond CCH, CH, CH,-S S-CH, hydrogen bond -CH,CH(CHl2 CH CH, CH CHCH -CH, helical structure | disulfide bond van der Waals forces dipole-dipole interactions hydrogen bonding ion-ion interactions

A R-N-CH; C H Water can hydrogen bond at which of the above locations? O A в O more than one choice is correct