Emission spectra - Study guides, Class 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...

Describe the relationship between the frequency, wavelength, and velocity (speed) of a wave. - AnswerThe more times the wave is passing through a point in space = a higher frequency, the higher frequency creates a smaller wavelength, which is why the smallest wave is a gamma wave, it has the highest frequency and the shortest distance between waves, the velocity can be measured in m/s and is composed of frequency and wavelength Calculate any one (frequency, wavelength, or velocity) given the...

Astronomy Chapter 5 Written Exam Questions & Answers. Suppose you see two stars: a blue star and a red star. Which of the following can you conclude about the two stars? Assume that no Doppler shifts are involved. (Hint: Think about the laws of thermal radiation.) - CORRECT ANSWER The blue star has a hotter surface temperature than the red star. From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation? - CORRECT ANS...

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 ...

LMRT Core Review Latest 2023 Graded A Where is the stator of the anode induction motor located? O/S the glass envelope& inside the rotor The exposure switch is found between the Autotransformer & the timer circuit The electrical device used to adjust the mA selection is a/an Variable resistor The timer control is found b/w the Incoming line & the step-down transformer The kVp control is found b/w the Incoming line & the exposure switch All of the following are radiographer-operated controls...

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...

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...

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...

Which of the following is correct scientific notation for 1.5 million? - correct answer 1.5 x 10^6 Your cousin lives 10 km away from you. Your grandmother lives a distance away that is 3 orders of magnitude larger. How far away does your grandmother live? - correct answer 10000 km Scientific theories can never be changed for any reason - correct answer ...