C125 - Study guides, Class notes & Summaries

CHEM C125 MIDTERM EXAM QUESTIONS WITH CORRECT ANSWERS

The lines observed in H-lamp are parts of Balmer Series. All these lines are due to a transition from various higher n value to a common n. What is this common lower n value for all these lines? - Answer- 2 The bright violet line of Hg lamp has a wavelength of 435.8 nm. What is the energy of the photon associated with this emission line? - Answer- 4.56*10^-19 J Given: In Atomic Spectra lab, a student obtained his best-fit line equation to be y = 0.29 x + 46.8 when he plotted his Vernier re...

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)...

Pearson Edexcel GCSE In History (1HI0) Paper 1: Thematic study and historic environment (1HI0/12) Option 12: Warfare and British society, c1250–present and London and the Second World War, 1939–45 Mark Scheme (Results) Summer 2024

Rearrange the following equation to solve for P. (P+a)(V-b)=nRT - Answer- P= nRT/V-b -a What is the y-intercept if B is plotted on y-axis and A is plotted on x-axis? - Answer- -20 Interpolation - Answer- estimating a value within the range of measured data extrapolation - Answer- projection; conjecture; V. extrapolate: infer (unknown information) from known information Assume that multiple trials of an experiment were performed. What is the quantity that describes how closely the re...

rearrange the ideal gas equation, PV=nRT to the form y=mx+b for the case where V is plotted on the y-axis and n on the x-axis. Name the equation, slope,a dn intercept - Answer- V= RT/P (n) slope: RT/P intercept: none Interpolation - Answer- estimating a value within the range of measured data extrapolation - Answer- projection; conjecture; V. extrapolate: infer (unknown information) from known information best fit line equation commonly takes y=mx+b format. What are your y, x, and...

C125- ACTUAL EXAM QUESTIONS WITH CORRECT ANSWERS

Pearson Edexcel GCSE (9–1) History PAPER 1: Thematic study and historic environment Option 12: Warfare and British society, c1250–present and London and the Second World War, 1939–45 Question Paper 2023

Pearson Edexcel GCSE (9–1) History PAPER 1: Thematic study and historic environment Option 11: Medicine in Britain, c1250–present and The British sector of the Western Front, 1914–18: injuries,treatment and the trenches QP MAY 2024

C125 FINAL LAB-SIMPLE EXAM QUESTIONS AND ANSWERS