s you draw and show -or something that represents molecules).
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- You are a graduate student who is trying to conduct an experiment. For this experiment, you need to create a 500 micromolar solution of Solution X. You have a stock solution of Solution X 500 millimolars. Your final volume needs to be 10 milliliters. How much of the stock solution do you need to add and how much water needs to be added in order to create a 50 micromolar solution of Solution X? O 1,000 microliters of X and 9 milliliters of water O 1 microliters of X and 9.999 milliliters of water 0.01 microliters of X and 9.99 milliliters of water 10 microliters of X and 9.99 milliliters of waterYou have a 3.5% (w/v) aqueous solution of protein. You want to make 2 mL of 0.8% (w/v) protein solution. What volume of the 3.5% solution do you need? 457 µl 45.7 µl 3.5 mL O 350 µL O 1.6 mLThe highlighted structure is what? #3
- Match the molecule with its correct descriptionThe triple point of an element is at 75 torr and 125°C. This means that liquid is more dense than solid cannot exist at 1 atmosphere pressure cannot have a vapor pressure less than 75 torr cannot exist above 125 degrees Celsius What is the electron geometry (or electron arrangement) around an atom in a molecule or ion which is surrounded by three lone pairs of electrons and two single bonds T-shaped see-saw trigonal planar trigonal bipyramidal linear A red blood cell placed in pure water will swell because water moves from a higer osmotic pressure to a lower osmotic pressure the osmotic pressure is greater in the cell than in the water the osmotic pressure is the same in the cell and the water the somotic pressure is greater in the water than in the cellConsider the given data (Solubility Tests, Solubility Group, Chemical Tests, and Functional Group) in the experiment. Based on the results of the solubility tests and chemical tests, what is the most probable structure of C4H6O2? Draw your answer. You may draw the compound using line-bond formula OR Lewis structure.
- If the pH is 2, what is the %HA at of a molecule has a pka = 6? Report the answer to one decimal place. Your Answer: Answer unitsWhich of the following statements is correct regarding polar/nonpolar molecules? 1. Molecules comprised of nonpolar covalent bonds are likely to be hydrophilic 2. Polar molecules like sugar tend to dissolve in solutions of other polar molecules like water 3. Nonpolar molecules like sugar tend to dissolve in solutions of polar molecules like water 4. Polar covalent bonds tend to form between molecules that consist of two atoms of the same element, like oxygen gas (O2) or nitrogen gas (N2)Match the following terms (A to F) with the statements (i – vi) below by selecting from the drop-down menus. Each choice may be used once, more than once, or not at all. A nonpolar covalent bond B polar covalent bond C ionic bond hydrogen bond E hydrophobic interaction F All of the above (1) Explains most specifically the attraction of water molecules to each other (i) Important for self-assembly of membranes (iii) Important in large biological molecules (iv) Joins backbone atoms in fatty acids (v) Easily disrupted in presence of water (vi) Important for alpha helix and beta sheet formation in proteins
- Match the molecules with the best description.(ER) fluids seen by naked eyes Material class: Material type [ non-smart/ smart / nano ] : Material scale: Deoxyribonucleic acid (DNA) Material class: Material type [ non-smart/ smart / nano ] : An (SMA) wire Material scale: Material scale: Material class: Material type [ non-smart/ smart / nano ] : 3 Material status: Material status: Material status:A chemist prepares a solution of aluminum sulfite (Al, (SO,).) by measuring out 179. µmol of aluminum sulfite into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum sulfite solution. Be sure your answer has the correct number of significant digits. mmol x10
