If a tablet of methotrexate contains 2.5 mg, how many micrograms of the methotrexate are in two tablets? * A patient is drinking 1/3 pint of orange every two hours. At this rate, how many quarts of orange juice will the patient drink in eight hours ?

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Q: Refer to the given equation KI + K₂Cr₂O₇ + HCl → CrCl₃ + KCl + I₂ + H₂O

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Q: what is the pOH of 5.6 x 10^-4M HCI

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Q: Please help Please find the limiting reagent using the information in the photo Please show your…

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Q: What are the two types of membrane usually employed for western blotting?

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Q: Which arrow would be present in a reaction where K 1.15? Off None of the above

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Q: What is the molar concentration of potassium? * Your answer What is the molar concentration of Hg? *…

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Q: What are the hormones formed from the precursor cholesterol? Give at least five

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Q: 2. Determine the AH° for the rxn: Cgraphite)+1/202(g) Given the following steps: Step 1:…

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Q: Edna ate one cup of corn chips, one cup of chicken a la king, and a nectarine for a total of 688…

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Q: 01 02 03 04 10--0 НО 2 2x OH HO OH OH O HO OH OH OH

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Q: C. Determination of Cell Potentials Cell Notation (Galvanic) Zn | Zn²+ (0.10 M) || Cu²+ (0.10 M) |…

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Q: Chemistry Identify and draw the symmetry elements for NH3

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Q: 19. How would you make the following molecule? Retrosynthetically show the reaction.

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Q: All of the following complexes will be colored EXCEPT O a. [Ni(H₂0)6] 2+ O b. [Fe(CN)6] 4- c.…

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Q: provide bond-line structure of the following cis-3-tert-Butylcyclohexanecarbaldehyde…

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Q: What is the pH of a solution composed of 0.40M HOBr and 0.40M NaOBr. Ka of HOBr is 2.6x10-⁹ 9.12…

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Q: Which acid-base reaction would favor products? 1-hexyne + NaF 1-pentyne + NaH O) 2-butyne + NaNH2 O…

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Q: Which of the following can be used to couple with Ni+2/Ni to produce a Ni-Metal based battery with…

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Q: 2. Write Ksp expression for each of the following: a. Ca3(PO4)2 b. Cu(103)2 c. AgCl

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Q: III. Find the number of moles of the following: A.56.1 g of Zn(C₂H302)2 B.232 g of Na3PO4

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Q: A chemist knows that the equilibrium constant is 0.0049 for the following reaction: . CO₂ (g) + H₂…

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Q: nucleophile + alkyl halide Pool of choices: OH ABC DEF Williamson ether synthesis OH GHI Br JKL Br

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Q: The conductance of several salts in a binary mixture of water and a dipolar aprotic solvent ethylene…

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A: Given, a) C(graphite) + 1 O2(g)  ➝ CO2(g) ∆H°rxn = -393.5 kJ/mol b) CO(g) + 1/2 O2(g)➝ CO2(g) ∆H°rxn…

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Q: Ni (s) | Ni+2 (1.5 M) || Ni+² (1.0 M) | Ni(s) is a valid spontaneous voltaic/concentration cell. Eº…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.