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- Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. Co(NO3)2 (or CoCl2)From the stock solution (1.0 M), determine the volume needed to prepare 0.00, 0.04, 0.08, 0.12 and 0.16 M Co(NO3)2 solution in 50 mL volumetric flask. Obtain the calculated amounts, place in corresponding volumetric flasks and dilute to mark.What volume of 2mg/mL BSA stock is needed to make 40uL of 100ug/mL BSA? Group of answer choices A) 2000uL b) 38uL c) 2uL D) 5uL E) 0.8uLDetermine and report the pressure of collected hydrogen gas in atmospheres. Report this result to one more digit than allowed by applying the rules of significant figures. (1 atm = 760 mm Hg, an exact conversion factor.) Determine the moles of hydrogen collected by substituting the appropriate quantities into the ideal gas equation and solving. Report this result to one more digit than allowed by applying the rules of significant figures. Notes: the gas temperature is the same as the listed temperature; R = 0.082057 L-atm/mol-K. Be mindful of units. Determine the experimental atomic mass of Cu. Round this result to the correct number of significant figures. Determine the percent relative error (= ????????????−?h????????? ? 100). The molar mass of Cu is 63.546 g/mol. Mass of copper before electrolysis 6.008 g Mass of copper after electrolysis 5.860 g Volume of H2 collected 58.9 mL Pressure of H2, PH2 720.8 mm Hg Temperature 24.0 oC
- The doctor ordered Claforan 1400mg IM every 12 hours. The directions for the 2 gm vial state: Add 5 mL of diluent to yield an approximate concentration of 360mg/mL. How many mL will you give?If 4.00 L of ethyl alcohol at 18.0 ⁰C is exposed to a temperature of 25.0 ⁰C, what is the resulting volume? (Alcohol: β = 1100x10⁻⁶ / ⁰C) * a. 4.03 L b. 4.31 L c. 0.308 L d. 0.0308 LPo-210 is an alpha emitter with a half-life of 138 days. Howmany grams of Po-210 remain after 552 days if the sampleinitially contained 5.80 g of Po-210?
- 10 mL of 0.5 M CuSO₄ * 5H₂O solution from 10 M CuSO₄ * 5H₂O solutionA 523.1-mg sample of impure KBr is treated with excess AgNO3 and 814.5 mg AgBr (187.774 g/mol) is obtained. What is the purity of the KBr (119.002 g/mol)?What volume of water is needed to make 40uL of 100ug/mL BSA from a 2mg/mL BSA stock? Group of answer choices A) 0.8uL B) 38uL C) 5uL D) 2uL E) 2000uL
- A 23-year-old male from San Diego, collapses in the mountains of Utah while participating in a marathon. Upon admittance to the ER, ABGs are drawn. The results are as follows: pH 7.52; HCO3- 23 mEq/L; pCO2 29 mmHg what is the compensation?The half-life of mercury-197 is 64.1 hours. If a patient undergoing a kidney scan is given 5.0 ng of mercury-197, how much will remain after 7 days? After 30 days?Use Beer Lamberts law to calculate the concentration of oxidised DCPIP A= 600 L = 1cm K = 11800 M^-1