CHEM 207 Exam Questions with Correct Answers Latest Update 2025 Graded A+
monoprotic base - Answers capable of accepting one proton
monoprotic acid - Answers capable of donating one proton
polyprotic base - Answers capable of accepting MORE THAN one proton
polyprotic acid - Answers capable of donating MORE THAN one proton
precision vs. accuracy - Answers accuracy is relationship to true value; precision is relationship of data
points to one another
density formula - Answers Density = mass/volume
Q test formula - Answers (suspect value - nearest value) divided by (largest value - smallest value)
standard deviation formula (s) - Answers find mean, subtract mean from each data point (d), square
those (d^2), add them up, divide by N-1, take square root
standard deviation is for measuring - Answers precision
variance formula - Answers s^2
relative standard deviation formula - Answers (s) divided by (mean) times 100%
standard error formula - Answers (s) divided by (the square root of N)
absolute error formula - Answers mean - true value
to find volume OR moles - Answers M1V1 = M2V2
molarity formula - Answers moles/L
% Tolerance formula - Answers (absolute error)(100) divided by (Volume at full capacity)
relative error formula - Answers absolute error)(100) divided by (Volume I measure)
propagation of errors - Answers error of two measurements > the error of one measurement
dilute a solution - Answers reduce concentration/increase solvent
absorbance A is inversely related to - Answers transmittance
absorbance A is linearly proportional to - Answers concentration
Calculate absorbance A (formula) - Answers A = (-log)(T) transmittance T
monoprotic base - Answers capable of accepting one proton
monoprotic acid - Answers capable of donating one proton
polyprotic base - Answers capable of accepting MORE THAN one proton
polyprotic acid - Answers capable of donating MORE THAN one proton
precision vs. accuracy - Answers accuracy is relationship to true value; precision is relationship of data
points to one another
density formula - Answers Density = mass/volume
Q test formula - Answers (suspect value - nearest value) divided by (largest value - smallest value)
standard deviation formula (s) - Answers find mean, subtract mean from each data point (d), square
those (d^2), add them up, divide by N-1, take square root
standard deviation is for measuring - Answers precision
variance formula - Answers s^2
relative standard deviation formula - Answers (s) divided by (mean) times 100%
standard error formula - Answers (s) divided by (the square root of N)
absolute error formula - Answers mean - true value
to find volume OR moles - Answers M1V1 = M2V2
molarity formula - Answers moles/L
% Tolerance formula - Answers (absolute error)(100) divided by (Volume at full capacity)
relative error formula - Answers absolute error)(100) divided by (Volume I measure)
propagation of errors - Answers error of two measurements > the error of one measurement
dilute a solution - Answers reduce concentration/increase solvent
absorbance A is inversely related to - Answers transmittance
absorbance A is linearly proportional to - Answers concentration
Calculate absorbance A (formula) - Answers A = (-log)(T) transmittance T
