What is the mass, in grams, of each elemental sample? a. 2.3 × 10^-3 mol Sb b. 0.03

Name: Problem 84, Chapter 2: Chemistry A Molecular Approach
Uploaded: 2019-06-11T02:15:35-08:00
Duration: 1 min 54 s
Channel: Eugene Schneider
Description: What is the mass, in grams, of each elemental sample? a. 2.3 × 10^-3 mol Sb b. 0.0355 mol Ba c. 43.9 mol Xe d. 1.3 mol W

step 1 So this problem gives us a number of moles of a certain element and wants us to find the number

Question

What is the mass, in grams, of each elemental sample? $$\begin{array}{l}{\text { a. } 2.3 \times 10^{-3} \text { mol Sb }} \\ {\text { b. } 0.0355 \text { mol Ba }} \\ {\text { c. } 43.9 \text { mol Xe }} \\ {\text { d. } 1.3 \text { mol } W}\end{array}$$

   What is the mass, in grams, of each elemental sample?
$$\begin{array}{l}{\text { a. } 2.3 \times 10^{-3} \text { mol Sb }} \\ {\text { b. } 0.0355 \text { mol Ba }} \\ {\text { c. } 43.9 \text { mol Xe }} \\ {\text { d. } 1.3 \text { mol } W}\end{array}$$

Chemistry A Molecular Approach

Nivaldo J. Tro 4th Edition

Chapter 2, Problem 84

Instant Answer

Solved by Expert Eugene Schneider

06/11/2019

Step 1

We can use the formula: \[ \text{Mass} = \text{Number of moles} \times \text{Molar mass} \] Show more…

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What is the mass, in grams, of each elemental sample? $$\begin{array}{l}{\text { a. } 2.3 \times 10^{-3} \text { mol Sb }} \\ {\text { b. } 0.0355 \text { mol Ba }} \\ {\text { c. } 43.9 \text { mol Xe }} \\ {\text { d. } 1.3 \text { mol } W}\end{array}$$

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Key Concepts

Moles

A mole is a fundamental unit in chemistry that quantifies the amount of substance. It represents a specific number of particles (6.022 x 10^23 particles), providing a bridge between the atomic scale and macroscopic amounts of material.

Molar Mass

Molar mass is defined as the mass of one mole of a substance, usually expressed in grams per mole (g/mol). It allows for the conversion between the number of moles and the mass of a substance by providing the relationship between atomic or molecular scale quantities and measurable mass.

Conversion Between Moles and Grams

Converting moles to grams is accomplished by multiplying the number of moles by the molar mass of the element or compound. This process uses dimensional analysis to ensure that the units correctly cancel, resulting in the mass expressed in grams.

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