Electron cloud - Study guides, Class notes & Summaries

Organic chemistry correct answers Chemistry of compounds which contain carbon Why are organic compounds central to the structure of living organisms? correct answers Organic compounds make up nucleic acids, amino acids, etc. Compounds correct answers 2 or more elements chemically combined Elements correct answers A molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions. Atoms correct answers Basic unit of matter which contains a nucleus and i...

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 ...

LMRT ARRT EXAM QUESTIONS WITH 100% COMPLETE SOLUTION A+ GRADED Roentgen discovered x-rays while working with a _____ tube? - ANS-Crookes An "electron cloud" surrounding the filament of the cathode is referred to as a - ANS-Space charge Free electrons of X-ray production come from the - ANS-Filament The creation of the space charge in the X-ray tube produces: - ANS-thermionic emission The majority of photons in the X-ray beam are created by which process? - ANS-Bremsstrahlung intera...

Equation for the number of stereoisomers and chiral centers # of stereoisomers=2^n n=chiral centers What does the direction of the electric field line represent? The movement of a positive test charge Oligodendrocytes and Schwann cells Produces myelin sheaths in the CNS and PNS function of myelin sheath to protect the neuron, provide insulation, and increase the speed of impulse transmission Another word for voltage is potential difference conductivity is ...

Equation for the number of stereoisomers and chiral centers # of stereoisomers=2^n n=chiral centers What does the direction of the electric field line represent? The movement of a positive test charge Oligodendrocytes and Schwann cells Produces myelin sheaths in the CNS and PNS function of myelin sheath to protect the neuron, provide insulation, and increase the speed of impulse transmission Another word for voltage is potential difference conductivity is ...

CEM 141 Exam 3 Questions and Answers Already Passed change of state from solid -> liquid -> gas ________ energy requires energy needed to phase change from solid --> liquid --> gas comes from: the surroundings when phases change from solid --> liquid --> gas, interactions are _______ between molecules overcome change of state from gas --> liquid --> solid ______ energy releases what happens to the energy from a phase change from gas --> liquid --> s...

Which reaction requires the most energy? A. N(g) → N+(g) + e - B. N+(g) → N2+(g) + e - C. F(g) → F+(g) + e - D. F+(g) → F2+(g) + e - - Answer-D. F+(g) → F2+(g) + e - Fluorine has a higher effective nuclear charge than Nitrogen - so it is harder to remove an electron (takes more energy because the electron is more strongly attracted by the nucleus). Effective nuclear charge is the same for F and F+ because the number of protons and core electrons are not changed. However, when t...

Chem 142 UW Exam 1 Latest Version Already Passed The atom Consists of a small nucleus with a positive charge containing most of the weight. Has an electron cloud with mostly empty space but some electrons as well Protons The chemical identity of the element Electrons Ionic character of atom Neutrons Isotopic character of the atom Atomic number (Above element on PT) represents... Number of protons Mass number represents... Sum of protons and neutrons Atomic mass (Under el...

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 ...

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 ...