Planck Guides d'étude, Notes de cours & Résumés

General Chemistry Final Exam Questions Correctly Answered. Atomic Number vs mass number vs. atomic mass vs. atomic weight vs. molecular weight - CORRECT ANSWER atomic number-Z=protons mass number- A=sum of protons and neutrons -atomic mass: mass number ^^ -atomic weight: weighted average of naturally occurring isotopes (12.011) -molecular weight: add up the atomic weights of each element in a compound subatomic charges aka charge of an electron - CORRECT ANSWER e= 1.6 x 10^-19 1 ele...

CLEP Chemistry Review Practice Questions 2024. John Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom Robert Millikan - correct answer Calculated ...

For use in exams from the June 2017 Series onwards DATA - FUNDAMENTAL CONSTANTS AND VALUES Quantity speed of light in vacuo permeability of free space permittivity of free space magnitude of the charge of electron the Planck constant gravitational constant the Avogadro constant molar gas constant the Boltzmann constant the Stefan constant the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) magnitude of electron charge/mass ratio proton rest mass (equivalent to 1.00728 ...

CLEP ChemistryJohn Dalton - correct answer Proposed that matter is composed of atoms; these atoms have different identities called elements, which combine to form compounds; measured masses of reactants and products. J.J. Thompson - correct answer Observed deflection of particles in a cathode ray tube; proposed that atoms are composed of positive and negative charges; developed the plum pudding model of the atom Robert Millikan - correct answer Calculated the charge-to-mass ratio of electr...

DAT General Chemistry Latest Update Graded A+ Atomic Number number of protons found in that atom; low number; (Z) Mass Number Protons + Neutrons; high number; (A) Atomic Mass relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = 1.66x10^-24 Atomic Weight weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, weighted according to the natural abundance of t...

A-level Physics data and formulae For use in exams from the June 2017 Series onwards DATA - FUNDAMENTAL CONSTANTS AND VALUES Quantity speed of light in vacuo permeability of free space permittivity of free space magnitude of the charge of electron the Planck constant gravitational constant the Avogadro constant molar gas constant the Boltzmann constant the Stefan constant the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) magnitude of electron charge/mass ratio prot...

DAT General Chemistry Exam |170|questions with complete solution Atomic Number ANS-number of protons found in that atom; low number; (Z) Mass Number ANS-Protons + Neutrons; high number; (A) Atomic Mass ANS-relative mass of that atom compared to the mass of a carbon-12 atom (which is set at 12.00); measured in amu; 1 amu = ANS-1.66x10^-24 Atomic Weight ANS-weight (g) of one mole (mol) of a given element (g/mol); the weighted average of all the masses (not the weights) of an element, ...

Radiation Therapy Board Exam Review – MOSBY fully solved to pass Orthovoltage machines operated in the range of A. 10-40 KV B. 100 KV C. 100-200 KV D. 150-500 KV - correct answer D. 150-500 KV 0.01 J/Kg is equivalent to: A. 1 Roengtgen B. 1 RAD C. 1 Gy D. 1 Bq - correct answer B. 1 RAD A pocket dosimeter is a A. low energy dosimeter B. thermoluminescent dosimeter C. cutie pie D. none of the above - correct answer A. low energy dosimeter Traditional unit of absorbed dose e...

What term best describes a major influence on image resolution for most CT scanners: - Voxel Photon Energy Formula - E=hv=hc/wl E=hf=hc/wavelength(lambda) h=Planck constant = 6.6261x10^-34 JS Speed of light = 3e8 f=photon frequency lambda = photon wavelength Which instrument would be the most appropriate choice for monitoring radiation leakage from a Cobalt- 60 source (with the source in the off position)? - radiotherapy verification film The number of atoms in one gram for any materia...

AS Physics data and formulae For use in exams from the June 2016 Series onwards DATA - FUNDAMENTAL CONSTANTS AND VALUES speed of light in vacuo permeability of free space permittivity of free space magnitude of the charge of electron the Planck constant gravitational constant the Avogadro constant molar gas constant the Boltzmann constant the Stefan constant the Wien constant electron rest mass