Skip to main content
Ch.3 - Chemical Reactions and Reaction Stoichiometry
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoBrown 15th EditionCh.3 - Chemical Reactions and Reaction StoichiometryProblema 45a
Capitolo 3, Problema 45a

Give the empirical formula of each of the following compounds if a sample contains a.0.0130 mol C, 0.0390 mol H, and 0.0065 mol O

Guida verificata passo dopo passo
1
Identify the number of moles of each element in the compound: 0.0130 mol C, 0.0390 mol H, and 0.0065 mol O.
Divide the number of moles of each element by the smallest number of moles present among the elements to find the simplest whole number ratio. In this case, divide each by 0.0065 mol.
Calculate the resulting ratios: \( \frac{0.0130}{0.0065} \) for C, \( \frac{0.0390}{0.0065} \) for H, and \( \frac{0.0065}{0.0065} \) for O.
Round the ratios to the nearest whole number to determine the subscripts for each element in the empirical formula.
Write the empirical formula using the whole number ratios as subscripts for each element.

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:
51s

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Empirical Formula

The empirical formula of a compound represents the simplest whole-number ratio of the elements present in that compound. It is derived from the mole quantities of each element, providing a basic understanding of the composition without indicating the actual number of atoms in a molecule.
Video consigliato:
Percorso guidato
02:26
Empirical vs Molecular Formula

Mole Concept

The mole is a fundamental unit in chemistry that quantifies the amount of substance. One mole corresponds to approximately 6.022 x 10²³ entities (atoms, molecules, etc.). Understanding the mole concept is essential for converting between mass, number of particles, and volume in chemical calculations.
Video consigliato:
Percorso guidato
01:25
Mole Concept

Mole Ratio

Mole ratio is the ratio of the number of moles of one substance to the number of moles of another substance in a chemical reaction or mixture. It is crucial for determining the empirical formula, as it allows for the simplification of the mole quantities of each element to their smallest whole-number ratio.
Video consigliato:
Percorso guidato
02:14
Neutron-Proton Ratio
Pratica correlata
Domanda del libro di testo

Give the empirical formula of each of the following compounds if a sample contains b.11.66 g iron and 5.01 g oxygen

3
views
Domanda del libro di testo

At least 25 mg of tetrahydrocannabinol (THC), the active ingredient in marijuana, is required to produce intoxication. The molecular formula of THC is C21H30O2. How many molecules?

1759
views
Domanda del libro di testo

The allowable concentration level of vinyl chloride, C2H3Cl, in the atmosphere in a chemical plant is 2.0×10−6 g/L. How many moles of vinyl chloride in each liter does this represent?

1334
views
Domanda del libro di testo

A sample of the male sex hormone testosterone, C19H28O2, contains 3.88×1021 hydrogen atoms. (b) How many molecules of testosterone does it contain?

1785
views
Domanda del libro di testo

Determine the empirical formula of each of the following compounds if a sample contains a. 0.104 mol K, 0.052 mol C, and 0.156 mol O;

4
views
Domanda del libro di testo

Give the empirical formula of each of the following compounds if a sample contains c.40.0% C, 6.7% H, and 53.3% O by mass.

3
views