Recent technological advances have made it more feasible than ever to work out the three-dimensional structure of proteins. There is intense interest in this research field, called structural biology. Why? a) Understanding structure should help us understand function b) Understanding structure can help in the design of drugs that alter the function of certain proteins c) Solving a protein's 3-D structure can lead to a better understanding of how the molecule works-for example, by identifying the active site and determining if there are regulatory sites O d) All of the reasons described in the other answers apply

ter answ Aqueo us sulfurous acid (H2S03) was made by dissolving 0.200 L of sulfur dioxide gas at 19°C and 745 mm Hg in water to yield 500.0 mL of solutio n. The acid solution required 17.6 mL of so dium hydroxide solution to reach the titration end point. What was the molarity of the sodium hy droxide solution? M NaOH IID $4 7. CO

How should the mercury bulb of the thermometer be placed in the distillation apparatus? Why is the placement of the thermometer is important during distillation?

Br MgBr (1 eq.), Et₂O

ANS 7-10

(a) 1.23 M sugar (C₁₂H₂O₁) solution (density of solution 1.12 g/mL) 1.09 201 (b) 0.849 M NaOH solution (density of solution 1.04 g/mL) m (c) 5.21 M NaHCO, solution (density of solution 1.19 g/mL) m Guided S

8:35 A moodle.nct.edu.om P Flag question Answer the following questions by using mole concept. (a) Calculate the molarity of a 105 g NazSO4 in 570 ml solution. [Atomic mass: Na=23 g/mol, S= 32 g/mol, O=16 g/mol, C=12 g/mol, H= 1 g/mol] (a1)no of moles of Na,SO4 (a2) molarity of solution (b) 29 g C6H12Og is dissolved in 210 g of water. Find out the molality of the solution. (b1) no of moles of CeH1206 (b2) molality of solution (c) How much volume of 1.9 M NaOH solution can be made by diluting 74 ml of 4 M NaOH. (d) Aspirin (CgHgO4) is a medication used to reduce pain, fever, or inflammation. Find out the mass of 3.5x1023 molecules of aspirin in gram. (d1) no of moles of Aspirin (d2) mass of aspirin Question 28 -> 11 •.. +

You grab a soft drink bottle from your refrigerator. The contents are liquid and remain liquid even when shaken. You now remove the cover, and the liquid solidifies. Provide an explanation for this finding.

More than 40% of the world's population has limited access to clean water. One proposed method for the production of clean water involves removing salt from seawater. Which technique would be used to separate the salt from the saltwater mixture?

It keeps telling me I have the wrong answer, am I inputting it incorrectly??