C125 Study guides, Class notes & Summaries

the quantity that you vary or control is the ___________ variable, and it is assigned to the _______________ -Answer- independent variable; abscissa (traditionally called the x-axis) the ________________ variable is assigned to the _________ and it is usually the quantity that you measure in the lab -Answer- dependent; ordinate (traditionally called the y-axis) results lie within the range of measured data -Answer- interpolated results involves extending the best-fit line (graphicall...

percent yield - Answers- actual yield / theoretical yield percent error - Answers- (experimental - theoretical) / theoretical write the balanced equations for the neutralization reactions of NaOH and HCl CH3COOH and OH - Answers- HCl(aq) + NaOH(aq) = Nacl(aq) + H2O (l) CH3COOH(aq) + OH-(aq) = CH3COO-(aq) + H2O(l) is the acid or base the limiting reactant in each neutralization reaction - Answers- acid does it matter if your ΔT values are in degrees celsius or kelvin when using q=m...

Which definition used for quality evaluates how well a product performs its intended function? Fitness for use Support services Value for price paid Psychological criteria – Answer- Fitness for use Which total quality management (TQM) process was developed to stress management's responsibility for quality? Statistical quality control charts Fitness quality for use 14 points for quality improvement Product design quality – Answer- 14 points for quality improvement W...

In Atomic Spectra lab, Vernier angles (V) in degrees of a Hg-lamp has a linear dependence on wavelength (λ) in nm of line spectra: V = 0.146 λ−10.85 a) Predict the Vernier angle in degree for a line that has a wavelength of 510 nm. b) If a student found a line at a Vernier angle of 76.5°, what is the wavelength in nm of this line? - Answer- a) 63.61 b) 598.288 Best-fit line equation commonly takes "y=mx+b" format. What are y, x, m and b? - Answer- y = y-value x= x-value m = slope ...

What is the slope if A is plotted on y-axis and B is plotted on x-axis? 5A + 3B = 8 - Answer- -3/5 Masses (in g) and volumes (in mL) of different amount of an unknown liquid were plotted in Excel and a best-fit-line equation was obtained. What is the unit of the slope for the best-fit-line equation? - Answer- g/mL R square value - Answer- quantity that describes how good experimental data fits into a straight line How many significant figures should the result of the following calcul...

Aliquot - Answer- - *Portion of measurement added* - Example: "In this experiment, we will be using an *aliquot* of 10 mL of water for each trial Sig Fig Rules (Significant) - Answer- - Any non-zero digit is a sig fig - Zeros between non-zeros are sig figs - Zeros to the right of the last non-zero digit are sig figs Sig Fig Rules (Insignificant) - Answer- - Zeros to the left of the first non-zero are NOT sig figs Calculations Rules for Sig Figs (+/-) - Answer- - Focus on decim...

acid - Answer- Arrhenius definition: a substance that has H in its formula and ionizes in water to yield H3O+ base - Answer- Arrhenius definition: a substance that has OH in its formula and dissociates in water to yield OH- salt water - Answer- a reaction between acid and hydroxide base always yields ____ and ____ formation of H3O+ ion - Answer- most of the time a hydrogen ion will find a water molecule to attach itself to HCl HBr HI HNO3 H2SO4 (only loss of first H is strong)...

An acute illness is - Answer- A sudden illness from which the person is expected to recover Persons living in nursing centers are called - Answer- residents The nursing team involves the following except - Answer- Doctors You have an important role in meeting standards and in the survey process. You must do the following except - Answer- Interview patients and family The Omnibus Budget Reconciliation Act of 1987 is a - Answer- Federal Law OBRA requires retraining and/or new compet...

An acute illness is - Answer- A sudden illness from which the person is expected to recover Persons living in nursing centers are called - Answer- residents The nursing team involves the following except - Answer- Doctors You have an important role in meeting standards and in the survey process. You must do the following except - Answer- Interview patients and family The Omnibus Budget Reconciliation Act of 1987 is a - Answer- Federal Law OBRA requires retraining and/or new compet...

Ileostomy - Answers-surgical creation of an opening between the ileum and the abdominal wall Malnourish - Answers-having bad health or having poor nutrition Electrolyte Balance - Answers-equal electrolytes entering and leaving the body Stoma - Answers-an artificial opening in the body Colostomy - Answers-creation of an artificial opening into the colon Ostomy - Answers-artificial opening (colostomy, ileostomy, etc.) Pressure Sore - Answers-ulcerated, worn away area on the skin,...