1. Calculations of volumetric analysis ordinarily consist of transforming the quantity of titrant used (in chemical units) to a chemically equivalent quantity of analyte (also in chemical units) through use of a stoichiometric factor. Use chemical formulas and dimensional analysis (NO CALCULATIONS REQUIRED) to express the ratio for the calculation of the percentage (w/w) of: a. hydrazine in rocket fuel by titration with standard iodine. Reaction: H₂NNH₂ +21₂ →→→ N₂(g) + 4I* + 4H* ->> b. sulfur in an agricultural spray that was converted to thiocyanate with an unmeasured excess of cyanide. Reaction: S(s) 1 CN- → SCN- After removal of the excess cyanide, the thiocyanate was titrated with a standard potassium iodate solution in strong HCl. Reaction: 2SCN+ 3103 + 2H+ +6Cl →>>> 2SO4+2CN +3ICl₂ + H₂O

M eq eq q eq eq eq eq eq eq eq eq Apple Google Disney ESPN Yahoo! Biomedical Careers Program Apple ☆ B Submit Answer prod03-cnow-owl.cengagenow.com iCloud Yahoo Images Bing Google Wikipedia Facebook Twitter LinkedIn The Weather Channel G D2L b COWLv2 |... b C Retry Entire Group PEOPLESOFT North Central D2L [Review Topics] [References] Use the References to access important values if needed for this question. For lead, Pb, the heat of vaporization at its normal boiling point of 1740 °C is 177.8 kJ/mol. The entropy change when 2.08 moles of liquid Pb vaporizes at 1740 °C, 1 atm is D2L 4 more group attempts remaining J/K. C G Yelp TripAdvisor M G C + 88

Heisenberg principal questions: The mass of sodium ions is 4.86 x 10-25 Kg. What will be error in velocity measurement if the error in position measurement is 1 nano-meter.(10-19 m)

Amines are weak bases. Table 10.2 in the course textbook provides a list of pKb values for several amines. The pK values for three amines and their structures are shown below. Explain why increased substitution on nitrogen results in an increase of the pKb value. H3C-NH2 PK = 3.36 H3C N-H pKb = 3.27 H₂C' H3C N-CH3 PK = 4.19 H₂C

Question 1 of 20 A barrel of crude oil has a volume of 42 gallons, only approximately 45% of which is processed into gasoline. If your car achieves 32 mi/gal, and you drive 36,000 miles in one year, how many barrels of crude oil are required to run your car for a year? Tap here or pull up for additional resources

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What is a primary standard?

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Submitting an external tool Available after May 9 at 11:59pm back I Review I Constants I P Part D [OH-] = 7.9 x 10-3 M Express your answer using two decimal places. pH: %3D Submit Request Answer MacBook Air

What is the R2 value for the linear regression?   Question 6 options:   0.977   0.994   0.983