Emission spectra - Study guides, Study notes & Summaries

ACS Chemistry 101 & 102 Final Exam Review 44 Questions with Verified Answers What is the difference between a homogeneous and heterogeneous mixture? Can they be separated? - CORRECT ANSWER A homogeneous mixture is a uniform composition throughout whereas a heterogeneous mixture has other substances. They can be separated but through physical processes. What is the difference between a physical and chemical property? Physical vs chemical change? - CORRECT ANSWER A physical prope...

AQA AS Physics Definitions Test Questions And Answers Specific charge - ANSWER- the charge to mass ratio or charge in coulombs divided by the mass in kilograms Isotope - ANSWER- a nucleus with the same number of protons but different number of neutrons Hadron - ANSWER- a particle that experiences the strong nuclear force. Composite particles made of either qqq (baryons) or q anti-q (baryon) Antimatter - ANSWER- Particles with the same mass but opposite charge Photoelectric effect ...

CHEM 111 Final Exam Questions and Answers 100% Pass Know your significant figure rules - Answer- ALL zeroes between non-zero numbers are ALWAYS significant. ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant. define calorimetry - Answer- the act of measuring heat required or evolved during a chemical proce...

We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) The first stellar mass black hole identified, Cygnus X-1, was found in 1973. The n...

SCH4UA Exam Review 2024 VERIFIED ANSWERS Electromagnetic Radiation in order of increasing energy and decreasing wavelength. Blackbody radiation Photoelectric effect Emission spectra Bohr's hypothesis Heisenberg Uncertainty Principle Quantum Numbers Intermolecular Forces Strongest to weakest IMFs If a molecule is non-polar (london dispersion forces), why is there still attraction between its atoms? T/F, The larger the compound, the greater the polarizability. Comparing IMF strengths ...

Instrumental Analysis ACS Final Prep Exam Questions With Correct Answers what are the difference between calibration sensitivity and analytical sensitivity - answercalibration sensitivity is the slope of a calibration curve at the concentration of interest while analytical sensitivity is a response to the noise ratio how to calculate calibration sensitivity - answery=mx+b (m is the calibration sensitivity) graph concentration vs mean analytical signal how to find the analytical sensitivit...

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...

Chapter 10 Questions and Answers 2024 The star Bernard's Star has an apparent magnitude of 9.5 and the star Lelande 21185 has an apparent magnitude of 7.5. Which one is brighter? By how many times? Lelande 21185 is the brighter star as the more negative the magnitude is, the brighter the object is. Subtract the two magnitudes and take the absolute value to get a positive answer. Then use that answer as the power on 2.512. |9.5-(+7.5)| =2| =2| 2.5 ^2 = 6.25 Therefore Lelande 21185 is about ...

BTEC Applied Science - Unit 1 – Physics 48 Questions with Answers periodic time - CORRECT ANSWER the time taken (in seconds) for one complete cycle of a wave, vibration, or oscillation T = 1/f - CORRECT ANSWER time period, T (in seconds) and frequency, f (in hertz) wave speed - CORRECT ANSWER the distance in metres (m) travelled by a wave in one second (s) wavelength - CORRECT ANSWER the distance (in metres) between two nearest corresponding points on a wave, e.g. the distance be...

Alpha particle Correct Answer Helium-4 atom (2neutrons and 2protons) Beta + decay Correct Answer Conversion of proton to neutron and emission of positron (anti-electron) Beta - decay Correct Answer Coverts neutron to proton and a B- particle (electron) which is ejected Electron capture Correct Answer Capture of electron from closest valence shell and then used to concert proton into a neutron Gamma decay Correct Answer Expulsion of energy resulting from nucleus returning to ground st...