Domanda del libro di testo
The ratio of oxygen to carbon by mass in carbon monoxide is 1.33:1.00. Find the formula of an oxide of carbon in which the ratio by mass of oxygen to carbon is 2.00:1.00.
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Ch.2 - Atoms & Elements
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving118
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds131
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions82
- Ch.6 - Gases114
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements90
- Ch.10 - Chemical Bonding I: The Lewis Model89
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials47
- Ch.14 - Solutions90
- Ch.15 - Chemical Kinetics115
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases136
- Ch.18 - Aqueous Ionic Equilibrium153
- Ch.19 - Free Energy & Thermodynamics93
- Ch.20 - Electrochemistry106
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry140
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 109
An a particle, 4He2 + , has a mass of 4.00151 amu. Find the value of its charge-to-mass ratio in C/kg.
Guida verificata passo dopo passo1
Identify the charge of the \( \alpha \) particle: An \( \alpha \) particle is essentially a helium nucleus, which consists of 2 protons and 2 neutrons. The charge of the \( \alpha \) particle is therefore the charge of 2 protons.
Calculate the charge in coulombs: The charge of a single proton is approximately \( 1.602 \times 10^{-19} \) C. Therefore, the charge of the \( \alpha \) particle is \( 2 \times 1.602 \times 10^{-19} \) C.
Convert the mass from atomic mass units (amu) to kilograms: The mass of the \( \alpha \) particle is given as 4.00151 amu. Use the conversion factor \( 1 \text{ amu} = 1.660539 \times 10^{-27} \text{ kg} \) to convert the mass to kilograms.
Calculate the charge-to-mass ratio: Divide the total charge of the \( \alpha \) particle by its mass in kilograms to find the charge-to-mass ratio.
Express the charge-to-mass ratio in \( \text{C/kg} \): Ensure the final expression of the charge-to-mass ratio is in the correct units of \( \text{C/kg} \).
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Charge-to-Mass Ratio
The charge-to-mass ratio (q/m) is a measure of the amount of charge per unit mass of a particle. It is calculated by dividing the charge of the particle (in coulombs) by its mass (in kilograms). This ratio is crucial in fields like mass spectrometry and particle physics, as it helps in understanding the behavior of charged particles in electric and magnetic fields.
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02:14
Neutron-Proton Ratio
Units of Measurement
In chemistry and physics, it is essential to use consistent units when performing calculations. The charge is typically measured in coulombs (C), while mass is measured in kilograms (kg). Understanding how to convert between units, such as converting atomic mass units (amu) to kilograms, is vital for accurately calculating the charge-to-mass ratio.
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02:52Units of Radiation Measurement
Helium Ion (4He2+)
The helium ion (4He2+) is a positively charged ion of helium, which has lost two electrons, resulting in a charge of +2. Its mass is slightly greater than that of a neutral helium atom due to the presence of two protons and two neutrons. Recognizing the properties of this ion, including its charge and mass, is essential for calculating its charge-to-mass ratio.
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06:17Ion Formation
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