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If you eat a 48 g serving rice every fourth day and you weigh 75 kg, what is your dose of inorganic arsenic (in µg per kg body weight per day) if the rice contains 386 µg kg-1of total arsenic, 45% of which is inorganic arsenic.
A certain substance has a heat of vaporization of 39.85 kJ/mol. At what Kelvin temperature will the vapor pressure be 4.50 times higher than it was at 335 K?
Determine the energy of 1.70 of photons for each of the following kinds of light. (Assume three significant figures.)
What is the pH of a solution made by adding 6.21 grams of sodium fluroide, NaF, to 391 mL of 0.317 M hydrofluoric acid, HF? (Assume no change in volume takes place.)
Which of the following substances is more likely to dissolve in liquid CS2. a). Sodium Iodide b). Lithium Iodide c). Iodine d). Potassium iodide
Compute the heats of combustion for the following reactions from the standard enthalpies of formation listed in Appendix 3.(→?H°f (HgO(s)) = -90.7 kJ/mol and ?H°f (FeO(s)) = -272 kJ/mol.)
With reference to relevant clinical analytes, discuss the use of immunoassay within clinical biochemistry.
Question- If you separated the supernatant from part a) above and treated this supernatant with 3.0 M HCl would a precipitate of PbCl2 be observed. Rationalize your answer mathematically.
Draw the "best" Lewis structure for the chlorate ion consistent with formal charge considerations. Show each atom individually; show all lone pairs as lone pairs. If any resonance forms are present, show each one. Evaluate all formal charges and s..
Consider the titration of a 24.0 mL sample of .175 M of CH3NH2 with .155 M HBr. Determing each of the following: the volume of added acid required to reach the equivalence point
Why might it be a good idea also to sequence a second set of fragments cleaved by another restriction enzyme?
Problem- Bromine will form compounds with each of the other elements in Period 4 of the periodic table. How does the type of bonding in the compounds change as one moves from potassium bromide to selenium bromide
An alkane with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat to give a single monochloride C8H17Cl. What is the most reasonable structure for the starting alkane
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