3-3. The density of 2-methyl-2-butanol is 0.806 g/mL. How many mgs represent an aliquot of 430 µL? How many mmols represent an aliquot of 0.650 mL (2-methyl-2-butanol, formula weight is 88.15 g/mol)?
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- Which structures represent 2-methylbutane (C, H,2)? CH, Trect H,C CH, 5/100 CH, Correct CH, 100% H.C CH CH CH Correct CH 0% in Progress CH, H,C CH. H.C CH CH 0% CH 0% 100% H.C CH stion mO Search Animations Slide Show Review View Help & Viewing v Share A A A ... halla Identify primary / secondary / tertiary alcohols CH5 H, H2 H -C- H2 -CH3 H,C- C-C CHH,C H2 С —СН. H;C- OH OH H. R-C-OH R-C-OH R, -HO- H 10 primary alcohol 20 secondary alcohol 30 tertiary alcohol Help Improve Office Notes cohols.pptx -. scroll pause f6 f7 f8 f9 f10 f12 m breakConcentration of Reagents (NH4)2S2O8 KI Na2S2O3 0.25 M 0.22 M 0.19 M Volumes of Solutions S₂082 (mL) Starch soln (mL) KNO3 (mL) EDTA soln (mL) KI (mL) S₂O32- (mL) x 5 9.7 0.9 26.4 0.5 9.9 1.1 Using the above data determine the concentration of I at the moment the reaction begins. HINT: This is a mixing problem. Determine the total number of moles of I and divide this amount by the total volume (in L). Be careful... If you go back and try this exercise again the values will change. Read the question carefully! Answer:
- Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. H Na → Select to Add Arrows acetone/ water H I :I: :6: Na Ⓒ H :CI:O acetone/water Please select a drawing or reagent from the question areaHow many grams of hexynyl lithium should be produced? 1-hexyne (0.22 mL) + LiHMDS (1.0 mL of 1.0 M solution in THF) = hexynyl lithiumWhat will be the resulting percentage (w/w) of the said syrup if 300 g /2L of sucrose will be used? Density of syrup is 1.313 g/mL. Master Formula Sucrose 850g; Purified water qs ad 1000mL a 9.62 % b 8.9% c 11.42 % d 5.63% e 10.62 %
- 0.1% w/v = ? mg/100 ml? Only include the number and not any units 2) 0.1% = ? ug/ml? Only include the number and not any units 3) What is the concentration of your stock in ug/ml? Only include the number and not any units 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.Br 1. Mgº, Ether 2. CO₂ 3. H3O+ 1. HBr, H₂O2, hv 2. Mgº, Ether 3. H 4. H3O+ (mild) 5. PCC1) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.
- 1) 0.1% w/v = ? mg/100 ml? Only include the number and not any units 2) 0.1% = ? ug/ml? Only include the number and not any units 3) What is the concentration of your stock in ug/ml? Only include the number and not any units 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places. 5)What dilution of your stock do you need to get the first standard (100 ug/ml)? Express as 1:x, where x is the fold dilution needed. 6)What weight of tartrazine (in mg) would you need to make up 250 mL of a 2.5 mM solution (MW of tartrazine is 534.4 g/mole)? Give your answer to the nearest whole number. write the number only, not the units1) 0.1% w/v = ? mg/100 ml? 2) 0.1% = ? ug/ml? 3)What is the concentration of your stock in ug/ml? 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.How many grams of 50 wt% NaOH (FM 40.00) should be diluted to 1.00 L to make 0.10 M NaOH?