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# CHEM125 ILLINOIS INS itute Experiment 3: TECHNOLOG Chemical Kinetics Rate of Reaction Post-lab Questions ( [ Opts)It has been found that in acid solution (grealer t...

## Question

##### Calcium in flour was analyzed by the following procedure. First; 0.1490 g of flour were dissolved by microwave digestion in 8 mL concentrated nitric acid + 2 mL 30% hydrogen peroxide The resulting solution was transferred to a 100.0 mL volumetric flask and diluted to the line with deionized water. From this, 20.00 mL were pipetted into each of four separate 50-mL volumetric flasks To these were added 0, 5.00, 10.00 and 15.00 mL of 8.17 mg/L calcium standard solution before diluting to the line w
Calcium in flour was analyzed by the following procedure. First; 0.1490 g of flour were dissolved by microwave digestion in 8 mL concentrated nitric acid + 2 mL 30% hydrogen peroxide The resulting solution was transferred to a 100.0 mL volumetric flask and diluted to the line with deionized water. F...
##### The high temperature of $28^{\circ} \mathrm{C}$ occurs at $2 \mathrm{P.M}$., and the average temperature of $20^{\circ} \mathrm{C}$ occurs 6 hours later. (TABLE CANNOT COPY) A. Let $t$ be time in months, with $t=1$ corresponding to January, $t=2$ to February, $\ldots, t=12$ to December, $t=13$ to January, and so on. Plot the data points for a two-year period. B. Find a function $P(t)=a \sin (b t+c)+d$ that $a p$ proximates the average monthly precipitation. Plot the data and the function $P$ on
The high temperature of $28^{\circ} \mathrm{C}$ occurs at $2 \mathrm{P.M}$., and the average temperature of $20^{\circ} \mathrm{C}$ occurs 6 hours later. (TABLE CANNOT COPY) A. Let $t$ be time in months, with $t=1$ corresponding to January, $t=2$ to February, $\ldots, t=12$ to December, $t=13$ to J...
##### Use the graph of the function $f$ given.Is there a local maximum value at $2 ?$ If yes, what is it?(GRAPHS CANNOT COPY)
Use the graph of the function $f$ given. Is there a local maximum value at $2 ?$ If yes, what is it? (GRAPHS CANNOT COPY)...
##### Puwet Ling Pulet lrom last week: From last week the functiondist(x,y) = Just pick point; make Rucs_ somewhere between Hickory; Boone and Asheville: (Based upon your coordinates, in miles, from last week ) Your guess: P = miles; miles) Now, evaluate your total distance. Use multivariable calculus to: Find the critical points Ok, solving this pair of equations by hand hurd' recommem that you Use Web App to solve the pair of non-linear equations_ GeoGebra will do this. So will Wolfram \$ Alpha
Puwet Ling Pulet lrom last week: From last week the function dist(x,y) = Just pick point; make Rucs_ somewhere between Hickory; Boone and Asheville: (Based upon your coordinates, in miles, from last week ) Your guess: P = miles; miles) Now, evaluate your total distance. Use multivariable calculus to...
##### A 75kg person is thrown into a water jet that has an angle of 55Â° to the ground. If the coefficient of friction between the personand the chorrera is 0.22, what will be the net force experienced bythe person?
A 75kg person is thrown into a water jet that has an angle of 55 Â° to the ground. If the coefficient of friction between the person and the chorrera is 0.22, what will be the net force experienced by the person?...