Electron shielding Study guides, Revision notes & Summaries
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OCR A Level Chemistry Paper 1 (H432/01) Periodic table, Elements and physical chemistry Mark Scheme June 2023
- Exam (elaborations) • 35 pages • 2024
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OCR A Level Chemistry Paper 1 (H432/01) Periodic table, Elements and physical chemistry Mark Scheme June 2023. FIRST CHECK THE ANSWER ON ANSWER LINE 
If answer = –1872 award 2 marks 
----------------------------------------------------------------- 
H lattice = 
2(+ 296) – 965 – 503 – 180 + 2(–107)– 602 
H lattice = –1872 (kJ mol–1 
) 
2 AO2.2 
2 
ALLOW for 1 mark +1872 (wrong sign on answer) 
Common errors for 1 mark 
–3056 (–296 x 2 instead of 296 x2) 
–2168 (2...
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OCR A Level Chemistry Paper 1 (H432/01) Periodic table, Elements and physical chemistry Mark Scheme June 2023
- Exam (elaborations) • 35 pages • 2024
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- £12.18
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OCR A Level Chemistry Paper 1 (H432/01) Periodic table, Elements and physical chemistry Mark Scheme June 2023. FIRST CHECK THE ANSWER ON ANSWER LINE 
If answer = –1872 award 2 marks 
----------------------------------------------------------------- 
H lattice = 
2(+ 296) – 965 – 503 – 180 + 2(–107)– 602 
H lattice = –1872 (kJ mol–1 
) 
2 AO2.2 
2 
ALLOW for 1 mark +1872 (wrong sign on answer) 
Common errors for 1 mark 
–3056 (–296 x 2 instead of 296 x2) 
–2168 (2...
-
Test Bank For Radiation Protection in Medical Radiography 9th Edition by Sherer | Chapter 1-14 | Complete 2023.
- Exam (elaborations) • 71 pages • 2023
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Test Bank For Radiation Protection in Medical Radiography 9th Edition by Sherer | Chapter 1-14 | Complete 2023. 
Chapter 01: Introduction to Radiation Protection 
Sherer: Radiation Protection in Medical Radiography, 9th Edition 
MULTIPLE CHOICE 
1. Consequences of ionization in human cells include 
1. creation of unstable atoms. 
2. production of free electrons. 
3. creation of highly reactive free radicals capable of producing substances poisonous to the 
cell. 
4. creation of new biologic mole...
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
- Exam (elaborations) • 23 pages • 2024
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and 
Physical Chemistry questions and answers verified 
What is the equation linking mass moles and MR? 
Mass=moles * MR 
What is the definition of Ar (relative atomic mass)? 
The average mass of an atom of an element compared to the mass of one twelfth of 
carbon 12. 
What does Mr stand for? 
Relative molecular mass 
Define relative isotopic mass. 
The mass of an isotope of an element compared to the mass of one twelfth of the mass 
of carbon 12 
...
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ASNT Level 3 Basic Materials & Processes Exam Questions and Answers
- Exam (elaborations) • 54 pages • 2022
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Fracture is a type of material failure. Of the following which is another type of material failure? - Permanent deformation. 
 
Which of the following statements best differentiates between a defect and a discontinuity? - Discontinuities can propagate and become defects. 
 
Nondestructive testing is often differentiated from other measurements or inspection techniques in that: - NDT involves indirect tests related to some other quality or characteristic of material. 
 
What are the functions of ...
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Solutions Manual For Inorganic Chemistry, 6th Edition (Alen Hadzovic, 2024), Chapters 1-27, Latest Guide A+.
- Exam (elaborations) • 230 pages • 2024
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Solutions Manual For Inorganic Chemistry, 6th Edition (Alen Hadzovic, 2024), Chapters 1-27, Latest Guide A+. 
TABLE OF CONTENTS 
Preface, v 
Acknowledgments, vii 
PART 1 Foundations 
Chapter 1 Atomic Structure 
Chapter 2 Molecular Structure and Bonding 
Chapter 3 The Structures of Simple Solids 
Chapter 4 Acids and Bases 
Chapter 5 Oxidation and Reduction 
Chapter 6 Molecular Symmetry 
Chapter 7 An Introduction to Coordination Compounds 
Chapter 8 Physical Techniques in Inorganic Chemistry 
PART...
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified
- Exam (elaborations) • 23 pages • 2024
- Available in package deal
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- £12.18
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AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and 
Physical Chemistry questions and answers verified 
What is the equation linking mass moles and MR? 
Mass=moles * MR 
What is the definition of Ar (relative atomic mass)? 
The average mass of an atom of an element compared to the mass of one twelfth of 
carbon 12. 
What does Mr stand for? 
Relative molecular mass 
Define relative isotopic mass. 
The mass of an isotope of an element compared to the mass of one twelfth of the mass 
of carbon 12 
...
-
Solutions Manual For Inorganic Chemistry, 6th Edition (Alen Hadzovic, 2024) Chapters 1-27, Latest Guide A+.
- Exam (elaborations) • 230 pages • 2024
-
- £20.31
- + learn more
Solutions Manual For Inorganic Chemistry, 6th Edition (Alen Hadzovic, 2024) Chapters 1-27, Latest Guide A+. 
TABLE OF CONTENTS 
Preface, v 
Acknowledgments, vii 
PART 1 Foundations 
Chapter 1 Atomic Structure 
Chapter 2 Molecular Structure and Bonding 
Chapter 3 The Structures of Simple Solids 
Chapter 4 Acids and Bases 
Chapter 5 Oxidation and Reduction 
Chapter 6 Molecular Symmetry 
Chapter 7 An Introduction to Coordination Compounds 
Chapter 8 Physical Techniques in Inorganic Chemistry 
PART ...
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Radon 104 Questions and Answers with Complete Solutions
- Exam (elaborations) • 13 pages • 2024
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Radon 104 Questions and Answers with 
 
Complete Solutions 
 
for most elements, the number of neutrons in the nucleus is? greater than the number of 
protons 
 
the number of protons and neutrons in the nucleus is known as? the Mass number 
 
the nucleus of an atom contains approx._________% of atomic mass 95% 
 
when the nucleus is formed, a certain amount of mass is destroyed and converted to energy 
called nuclear glue, the binding energy of the nucleus. 
 
in photodisintegration a very high...
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CWB BOOK 4 Welding Processes & Equipment 2023/2024 latest update
- Exam (elaborations) • 29 pages • 2023
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CWB BOOK 4 Welding Processes & EquipmentAWS groups welding processes based primarily on ? - correct answer Mode of energy transfer, and the influence of capillary action in the effecting distribution of filler metals in the joint 
 
AWS defines welding as? - correct answer A joining process producing coalescence of materials by heating them the the welding temperature with, or without the application of pressure or by the application of pressure alone, and without or without the use of filler me...
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