Avogadros constant - Study guides, Revision notes & Summaries

Chemistry AQA AS Questions 100% Correct Answers Mass number -ANSWER Total number of protons and neutrons. Atomic number -ANSWER Numbers of protons in the nucleus and number of electrons in shells. Negative Ions -ANSWER More electrons than protons. Positive ions -ANSWER More protons than electrons. Relative isotopic mass -ANSWER mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mas...

Chemistry A Level Edexcel 2023 Exam Questions And Complete Solutions Mass spectrometry - ANSWER using lasers to ionise atoms into cations, then measure the abundance and mass using their mass-to-charge ratios Mass to charge ratio - ANSWER the mass of an ion divided by its charge (usually +1 in mass spectrometry) units: m/z relative atomic mass - ANSWER the average mass of an atom of an element relative to 1/12 of an atom of the isotope C-12 relative isotopic mass - ANSW...

Chemistry AS Level AQA Physical Chemistry Revision Key Words Graded A Activation energy The minimum energy that a particle needs in order to react Atom economy mass of desired products/total mass of reactants x 100 Atomic orbital A region of space where there is a high probability of finding an electron Avogadros constant The total number of particles in one mole of a substance or 6.022 x 10^23 Catalyst A substance that alters the rate of a chemical reaction but is not used up in the reactio...

What is Avogadro's constant? - ANSWERS1 mole = 6.02 x 10^23 atoms What is equation for moles? - ANSWERSMoles = mass/Mr How would you use molar mass to balance an equation? - ANSWERS1) Dive the mass by the Mr to calculate the number of moles of each. 2) Dive each number of moles by the smallest to determine the ratio. 3) The molar ratio is equal to the coefficient in the equation. How much is 1 dm^3 in cm^3? How much is 1 dm^3 in ml^3? - ANSWERS1 dm^3 = 1000cm^3 1 dm^3 = 1000ml^3 ...

BIOL 213 FINAL EXAM BANK: EXAM 1: EXAM 1 HW: 1. If phosphorus-32 has an atomic number of15, how many neutrons does it usually have? - 17 2. The seed of a desert plant may be dormant for many years without growing, but is still considered to be alive because it? - Possesses heritable information 3. A “rogue” scientist is featured in many movies, but actual scientific discovery and advancement is done as a community, involving lots of dedicated scientists. Once a hypothesis has been supported ...

Mass number - ANSWERS Total number of protons and neutrons. Atomic number - ANSWERS Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWERS More electrons than protons. Positive ions - ANSWERS More protons than electrons. Relative isotopic mass - ANSWERS mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mass - ANSWERS average mass of an atom of an element on a scale where an atom of carbon12 is ...

THIS IS THE PART 2ND OF KTG[KINETIC THEORY OF GASES].EASY AND UNDERSTANDABLE EXPLANATION OF GAS LAWS.Some conceptual basic numericals to understand the basic concept and also conversion of graphs

Chemistry AQA AS Questions And Answers(A+ GRADED) Mass number - ANSWER Total number of protons and neutrons. Atomic number - ANSWER Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWER More electrons than protons. Positive ions - ANSWER More protons than electrons. Relative isotopic mass - ANSWER mass of an at...

Introduction to properties of gases. Pressure exerted by a gas , its SI units and other commonly used units such as atm, bar, torr etc and their relationship between them. This document also covers gas laws such as boyles law, Charles law, avogadro’s law in detail along with their graphs. The ideal gas equation and its usage. Relationship between density, molar mass and ideal gas equation.

matter objects that take up space and have mass. made up of elements. physical thermal electrical and chemical properties (color, density,hardness,conductivity) elements substances that cannot be broken down into simpler substances by chemical means. atoms&molecules everything in the physical world is make up of microscopic matter comprised of atoms or molecules. homogenous matter properties are the same throughout. coal and glass are examples heterogenous matter ...