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.
2700
views
Ch.2 - Atoms & Elements
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving136
- Ch.2 - Atoms & Elements112
- Ch.3 - Molecules, Compounds & Chemical Equations159
- Ch.4 - Chemical Quantities & Aqueous Reactions140
- Ch.5 - Gases118
- Ch.6 - Thermochemistry106
- Ch.7 - Quantum-Mechanical Model of the Atom62
- Ch.8 - Periodic Properties of the Elements103
- Ch.9 - Chemical Bonding I: The Lewis Model104
- Ch.10 - Chemical Bonding II: Molecular Shapes & Valence Bond Theory89
- Ch.11 - Liquids, Solids & Intermolecular Forces73
- Ch.12 - Solids and Modern Material59
- Ch.13 - Solutions110
- Ch.14 - Chemical Kinetics140
- Ch.15 - Chemical Equilibrium78
- Ch.16 - Acids and Bases155
- Ch.17 - Aqueous Ionic Equilibrium176
- Ch.18 - Free Energy and Thermodynamics108
- Ch.19 - Electrochemistry118
- Ch.20 - Radioactivity and Nuclear Chemistry82
- Ch.21 - Organic Chemistry150
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 98
The ratio of the mass of a nitrogen atom to the mass of an atom of 12C is 7:6, and the ratio of the mass of nitrogen to oxygen in N2O is 7:4. Find the mass of 1 mol of oxygen atoms.
Guida verificata passo dopo passo1
First, we need to understand that the mass of an atom of 12C (carbon-12) is exactly 12 atomic mass units (amu) by definition. Given that the ratio of the mass of a nitrogen atom to the mass of an atom of 12C is 7:6, we can set up a proportion to find the mass of a nitrogen atom. Let's denote the mass of a nitrogen atom as 'N'. So, we have N/12 = 7/6.
Next, solve the proportion for 'N' to find the mass of a nitrogen atom in atomic mass units (amu).
Then, we know that the ratio of the mass of nitrogen to oxygen in N2O is 7:4. This means that for every 7 parts of nitrogen, there are 4 parts of oxygen. Since there are two nitrogen atoms in N2O, the mass of one nitrogen atom is half of the total nitrogen mass in N2O. So, we can set up another proportion: (N/2) / O = 7/4, where 'O' is the mass of an oxygen atom.
Solve this proportion for 'O' to find the mass of an oxygen atom in atomic mass units (amu).
Finally, to find the mass of 1 mol of oxygen atoms, multiply the mass of an oxygen atom (in amu) by Avogadro's number (6.022 x 10^23). This is because 1 mole of any substance contains Avogadro's number of particles (atoms, in this case).
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Atomic Mass and Molar Mass
Atomic mass is the mass of an individual atom, typically measured in atomic mass units (amu). Molar mass, on the other hand, is the mass of one mole of a substance, expressed in grams per mole (g/mol). Understanding these concepts is crucial for converting between the mass of atoms and the mass of moles, which is essential for solving stoichiometric problems.
Video consigliato:
Percorso guidato
02:19
Atomic Mass
Mass Ratios in Compounds
Mass ratios in compounds indicate the relative masses of different elements within a compound. In the question, the mass ratio of nitrogen to oxygen in N2O is given as 7:4, which allows us to set up a relationship between the masses of nitrogen and oxygen. This concept is fundamental for determining the mass of one mole of oxygen based on the provided ratios.
Video consigliato:
Percorso guidato
02:14Neutron-Proton Ratio
Stoichiometry
Stoichiometry is the area of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. It involves using ratios derived from balanced chemical equations to calculate the amounts of substances involved. In this question, stoichiometry is applied to find the mass of oxygen based on the mass ratios provided for nitrogen and oxygen.
Video consigliato:
Percorso guidato
01:16Stoichiometry Concept
Pratica correlata
Domanda del libro di testo
Naturally occurring iodine has an atomic mass of 126.9045 amu. A 12.3849 g sample of iodine is accidentally contaminated with an additional 1.00070 g of 129I, a synthetic radioisotope of iodine used in the treatment of certain diseases of the thyroid gland. The mass of 129I is 128.9050 amu. Find the apparent 'atomic mass' of the contaminated iodine.
2031
views
2
comments
Domanda del libro di testo
An a particle, 4He2 + , has a mass of 4.00151 amu. Find the value of its charge-to-mass ratio in C/kg.
848
views
1
comments
Domanda del libro di testo
A 7.83 g sample of HCN contains 0.290 g of H and 4.06 g of N. Find the mass of carbon in a sample of HCN with a mass of 3.37 g.
1424
views
1
rank
Domanda del libro di testo
The ratio of sulfur to oxygen by mass in SO2 is 1.0:1.0. a. Find the ratio of sulfur to oxygen by mass in SO3. b. Find the ratio of sulfur to oxygen by mass in S2O.
2300
views
1
comments
Domanda del libro di testo
Use the mass spectrum of lead to estimate the atomic mass of lead. Estimate the mass and percent intensity values from the graph to three significant figures.
595
views