The reaction of the alloy with the acid is exothermic. If the hydrogen gas released is warmer than the water temperature and you use the incorrect low temperature, how would this effect your calculated %Al result (high or low)? Explain.

A student performs three runs of the experiment using pure aluminum and determines an average N_H2 of 0.01156 mol/g and a standard deviation of 0.00001 mol/g. What do these results tell you about the random and systematic errors present in his analysis?

Describe the “Atwood’s Machine” used in this lab. What are some examples of similar types of mechanisms in everyday life?

2) How does the total mass suspended from the Atwood’s Machine change in successive runs in our experiment? Explain.

3) Why would it be much harder to predict the behavior of an Atwood’s Machine that used a heavy steel cable to connect the hanging masses instead of a very light string like ours uses?

4) What is a linear fit regression line and how is it calculated?

A car owner conducts an experiment by filling up their car with 10 gallons of gas and drives until it runs out of gas. The number of miles driven from the 10 times of doing this experiment is shown below: 246 251 279 207 274 255 322 248 231 245

Find the following: Show ALL necessary work

a) Median

b) Lower and Upper Quartiles

c) IQR

d) State the mild outliers, if any. If there are no outliers, then state "no outliers".

1) During a pandemic, private sector financial behaviour becomes more risk-averse would like to move into surplus. Suppose that the foreign sector also runs a surplus. What does this imply for the government financial balance? Under what circumstances is it possible for a country to run a government surplus and a domestic private sector surplus at the same time?

2) Explain Hyman Minsky’s Financial Instability Hypothesis, using a balance sheet approach. How can stability breed instability, according to Minsky?

Retailing

considering the Food and General Merchandise types of retailers (not Service):

What type of retailer do you think is experiencing the biggest growth? Why?

What type of retailer do you think is decreasing in popularity? Why?

Now thinking of Service Retailers:

Why are these types of retailers growing significantly?

What specific service retailer do you think does a really good job, meaning it runs very efficiently and takes good care of its customers?

Given the population 10 top scores of Cricketer Saeed Anwer from February 1997 to June 2001

a. Find the population variance and standard deviation of this set of data.

b. What would be the Saeed Anwar scour on 27th percentile and 1st quartile in above scores?

c. A sample is taken from the population 108, 101, 104, 63, 72

Find the sample variance and standard deviation.

A standard galvanic cell is constructed in which a Cd²⁺ | Cd half cell acts as the cathode. Which of the following statements are correct?

Hint: Refer to a table of standard reduction potentials.

(Choose all that apply.)

1. The anode compartment could be F₂|F^-.

2. The anode reaction could be Cr -> Cr³⁺ + 3e^-

3. Cd²⁺ is reduced at the cathode.

4. As the cell runs, anions will migrate from the Cd²⁺|Cd compartment to the other compartment.

5. The cathode reaction is Cd -> Cd²⁺ + 2e^-

Using newtons gravitation laws, design a program in C++ that determine the position of n=3 number of bodies relative to each other, and outputs the results in a ongoing table that constantly updates as long as the simulation runs, and a pgPlot.

Implement the newtonian equations using the LEAPFROG Method. Show how the you solved the equations.
Make sure to describe each section of your code to describe what each part of your code is responsible for (i.e use //) to recieve full marks?

Question #11. Write a script that uses the menu function to prompt the user to select the current day of the week. Then use the menu function to prompt the user to select their favorite day of the week. Print a message telling the user how many days it will be until their favorite day. The output must include the current day, the favorite day, and the number of days until the favorite day. Debug your programming by running it many times and testing it with different input combinations. Here are some sample runs

matlab

Suppose a legislator is deciding whether they should put in the effort to draft a bill. The legislator only wants to do this if they are convinced that a majority of their consituents support the bill. The legislator runs a poll of 1,000 constituents, and will be convinced that a majority of their constituents support the bill if the lower bound of the 95% confidence interval for the probability that a constituent supports the bill is greater than 0.50. 550 out of the 1,000 constituents polled indicate support for the bill. Will the legislator put in the effort to draft the bill? (Possible answers are yes or no).