Stiochemistry of reactions: gas revolutions Show all work for full credit 1. The

Question

Stiochemistry of reactions: gas revolutions Show all work for full credit 1. The equation for the regression line follows the formula y=my+b, where b is the y-intercept. The y-intercept of the regression line should be zero. Why? How close are your calculated value to the excepted value?
2. When you plotted the regression line you had the option of displaying the R-squared value on the graph. What are the r-squared value for your graph? What do these values indicate about the fit of your data?
3. If you use 10ml of acid rather than 20, how would your data be different? Would you still be able to determine the ratio of moles of hydrogen generated to moles of metal consumed? Stiochemistry of reactions: gas revolutions Show all work for full credit 1. The equation for the regression line follows the formula y=my+b, where b is the y-intercept. The y-intercept of the regression line should be zero. Why? How close are your calculated value to the excepted value?
2. When you plotted the regression line you had the option of displaying the R-squared value on the graph. What are the r-squared value for your graph? What do these values indicate about the fit of your data?
3. If you use 10ml of acid rather than 20, how would your data be different? Would you still be able to determine the ratio of moles of hydrogen generated to moles of metal consumed? Show all work for full credit 1. The equation for the regression line follows the formula y=my+b, where b is the y-intercept. The y-intercept of the regression line should be zero. Why? How close are your calculated value to the excepted value?
2. When you plotted the regression line you had the option of displaying the R-squared value on the graph. What are the r-squared value for your graph? What do these values indicate about the fit of your data?
3. If you use 10ml of acid rather than 20, how would your data be different? Would you still be able to determine the ratio of moles of hydrogen generated to moles of metal consumed? Show all work for full credit 1. The equation for the regression line follows the formula y=my+b, where b is the y-intercept. The y-intercept of the regression line should be zero. Why? How close are your calculated value to the excepted value?
2. When you plotted the regression line you had the option of displaying the R-squared value on the graph. What are the r-squared value for your graph? What do these values indicate about the fit of your data?
3. If you use 10ml of acid rather than 20, how would your data be different? Would you still be able to determine the ratio of moles of hydrogen generated to moles of metal consumed?

Explanation / Answer

ANSWERS :

1. The y- intercept of regression line should be zero because we dosen't want it to cross y- axis. If slope is positive the function run uphills and if slope is negative the function run downhills. If the slope is zero y does not change , thus is constant horizontal line. Calculated value are very very close to expected value.

2. r - squred value are also called as coefficient of determination. It is a statistical measure of how close the data are to the fitted regression line. it shows how well regression line approximates real data points r2 = 1 the regression line perfectly fits the data.

3. If you use 10ml of acid rather than 20 then your graph will shifted to right side because the solution become diluted. but wwe are still able to determinr the ratio of moles of hydrogen generated to moles of metal consumed.

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