Avogadro constant Study guides, Class notes & Summaries
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![Physics OCR A Level Module 5: Newtonian World and Astrophysics: Questions with Complete Solutions](/docpics/5679529/66739d18e49fa_5679529_121_171.jpeg)
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Physics OCR A Level Module 5: Newtonian World and Astrophysics: Questions with Complete Solutions
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Absolute Temperature 
A temperature value relative to absolute zero. 
Absolute Zero 
The lowest possible temperature of a system, where no heat remains and the particles in the system 
have no kinetic energy. 
Avogadro Constant 
The number of particles that make up one mole of any gas. 
Boltzmann Constant 
A constant relating the average kinetic energy of the particles in a gas, to the gas’ temperature. 
Boyle’s Law 
The pressure of an ideal gas is inversely proportional to its volume when ...
![AQA AS level Chemistry exam 2024 questions with 100% correct answers](/docpics/5234940/663bc831e44c4_5234940_121_171.jpeg)
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AQA AS level Chemistry exam 2024 questions with 100% correct answers
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
Nucleons - ANSWERS Protons and neutrons 
Electrons (location) - ANSWERS Surrounding the nucleus 
Relative mass of an electron - ANSWERS 1/1840 
Strong nuclear force - ANSWERS The way protons and neutrons are held together in 
the nucleus 
Electrostatic forces - ANSWERS The attraction between protons and electrons that 
hold them together in the atom 
Atomic Number (Z) - ANSWERS The number of protons in the nucleus 
Mass nu...
![AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS](/docpics/5234912/663bc7c3227ac_5234912_121_171.jpeg)
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT 
ANSWERS 
Absolute temperature - ANSWERS Temperature measured in Kelvin 
Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 
273.15 degrees celius or zero Kelvin 
Acceleration - ANSWERS The stage in mass spectrometry where positive ions are 
speeded up by an electric field 
Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide 
Actual yield - ANSWERS Mass of product obtained in a ...
![AQA AS level Chemistry exam 2024 questions with 100% correct answers](/docpics/5223623/663a89f33dbb3_5223623_121_171.jpeg)
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AQA AS level Chemistry exam 2024 questions with 100% correct answers
- Exam (elaborations) • 17 pages • 2024
- Available in package deal
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- $13.49
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
Nucleons - ANSWERS Protons and neutrons 
Electrons (location) - ANSWERS Surrounding the nucleus 
Relative mass of an electron - ANSWERS 1/1840 
Strong nuclear force - ANSWERS The way protons and neutrons are held together in 
the nucleus 
Electrostatic forces - ANSWERS The attraction between protons and electrons that 
hold them together in the atom 
Atomic Number (Z) - ANSWERS The number of protons in the nucleus 
Mass nu...
![AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS](/docpics/5223594/663a897a35c84_5223594_121_171.jpeg)
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS
- Exam (elaborations) • 12 pages • 2024
- Available in package deal
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AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT 
ANSWERS 
Absolute temperature - ANSWERS Temperature measured in Kelvin 
Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 
273.15 degrees celius or zero Kelvin 
Acceleration - ANSWERS The stage in mass spectrometry where positive ions are 
speeded up by an electric field 
Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide 
Actual yield - ANSWERS Mass of product obtained in a ...
![CIE A'level Physics 9702 A2: Medical Physics](/docpics/5011072/661d94de7f647_5011072_121_171.jpeg)
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CIE A'level Physics 9702 A2: Medical Physics
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CIE A'level Physics 9702 A2: Medical 
Physics 
Absolute Zero - correct answer-The theoretical temperature at which the molecules of a 
substance have the lowest energy and hence the substance has minimum internal energy 
and no kinetic energy 
acoustic impedance - correct answer-product of density of medium and speed of sound in 
medium 
Activity - correct answer-The number of atoms of a radioactive substance that decay per unit 
time. 
amplitude modulation - correct answer-amplitude of carrier...
![OCR A LEVEL CHEMISTRY A H432/01 PERIODIC TABLE,ELEMENTS AND PHYSICAL CHEMISTRY GENUINE 2024 EXAM 100% COMPLETE WITH ACTUAL ANSWERS CHECK THE LAST PAGE FOR ANSWERS.](/docpics/3942441/6569edfaf2166_3942441_121_171.jpeg)
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OCR A LEVEL CHEMISTRY A H432/01 PERIODIC TABLE,ELEMENTS AND PHYSICAL CHEMISTRY GENUINE 2024 EXAM 100% COMPLETE WITH ACTUAL ANSWERS CHECK THE LAST PAGE FOR ANSWERS.
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OCR A LEVEL CHEMISTRY A H432/01 PERIODIC TABLE,ELEMENTS AND PHYSICAL CHEMISTRY 
GENUINE 2024 EXAM 100% COMPLETE WITH ACTUAL ANSWERS 
CHECK THE LAST PAGE FOR ANSWERS. 
1	Several students titrate 25.00 cm3 of the same solution of sodium hydroxide, NaOH(aq) with hydrochloric acid, HCl (aq). 
 
One student obtains a smaller titre than the other students. Which procedure explains the smaller titre? 
A	The burette readings are taken from the top of the meniscus instead of the bottom of the meniscus. 
...
![OCR A-LEVEL CHEMISTRY MODULE 2 | Questions and Answers with complete solution](/docpics/3048253/64ad3470019b7_3048253_121_171.jpeg)
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OCR A-LEVEL CHEMISTRY MODULE 2 | Questions and Answers with complete solution
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ISOTOPES - ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS 
ATOMIC (PROTON) NUMBER - NUMBER OF PROTONS IN THE NUCLEUS 
MASS (NUCLEON) NUMBER - NUMBER OF PARTICLES (PROTONS & NEUTRONS) IN THE NUCLEUS 
ION - A POSITIVELY OR NEGATIVELY CHARGED ATOM OR (COVALENTLY BONDED) GROUP OF ATOMS 
RELATIVE ISOTOPIC MASS - THE MASS OF AN ISOTOPE COMPARED WITH ON TWELTH OF THE MASS 
OF AN ATOM OFCARBON 12 
RELATIVE ATOMIC MASS - THE WEIGHTED MEAN MASS OF AN ATOM OF AN ELEMENT COMPARED 
WITH ONE TWE...
![A-level Physics data and formulae](/docpics/3603974/6526ec0c42c28_3603974_121_171.jpeg)
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A-level Physics data and formulae
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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 u) 
 
proton charge/mass ratio 
 
neutron rest mass (equivalent to 1.00867 u) 
gravitational fi...
![Physics 9702 A2 Level Definitions](/docpics/5010620/661d85e16e998_5010620_121_171.jpeg)
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Physics 9702 A2 Level Definitions
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Absolute Zero - correct answer-The theoretical temperature at which the molecules of a 
substance have the lowest energy and hence the substance has minimum internal energy 
and no kinetic energy 
acoustic impedance - correct answer-product of density of medium and speed of sound in 
medium 
Activity - correct answer-The number of atoms of a radioactive substance that decay per unit 
time. 
amplitude modulation - correct answer-amplitude of carrier wave varies in synchrony with the 
displacement...
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