We appreciate your visit to Determine the number of moles in a 38 2 g sample of sodium chloride NaCl. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Answer:
[tex] \huge{ \boxed{0.653 \: moles}}[/tex]
Explanation:
The number of moles of the NaCl sample can be found by using the formula:
[tex] n = \dfrac{m}{M} [/tex]
where:
m is the mass in grams
M is the molar mass in g/mol
n is the number of moles
From the question:
m = 38.2 g
Molar mass (M) of NaCl = 23 + 35.5 = 58.5 g/mol
[tex] \therefore \: n = \dfrac{38.2}{58.5} \\ = 0.653 \: \: mol[/tex]
Thanks for taking the time to read Determine the number of moles in a 38 2 g sample of sodium chloride NaCl. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!
- Why do Businesses Exist Why does Starbucks Exist What Service does Starbucks Provide Really what is their product.
- The pattern of numbers below is an arithmetic sequence tex 14 24 34 44 54 ldots tex Which statement describes the recursive function used to..
- Morgan felt the need to streamline Edison Electric What changes did Morgan make.
Rewritten by : Barada
Final answer:
The number of moles in a 38.2 g sample of sodium chloride (NaCl) is calculated as 0.072 mol NaCl. By understanding the dissociation of NaCl, we also find that there are 0.14 mol of ions present in the sample.
Explanation:
To determine the number of moles in a 38.2 g sample of sodium chloride (NaCl), we use the following steps:
- First, we convert from grams to moles of NaCl using the molar mass of NaCl as the unit conversion factor. The molar mass of NaCl is the sum of the atomic masses of sodium (Na) and chlorine (Cl), which is 22.99 amu for Na and 35.45 amu for Cl, giving us a total of 58.44 g/mol for NaCl. Therefore, the number of moles of NaCl is calculated by dividing the mass of the sample by the molar mass.
0.072 mol NaCl - Then, to determine the number of moles of ions present in the sample, we consider that each mole of NaCl dissociates into two ions - one sodium ion (Na+) and one chloride ion (Cl-). Since there are two ions for every mole of NaCl, we use the number of moles of NaCl already found and multiply by the ratio of moles of ions per mole of NaCl (2 mol ions/1 mol NaCl) to find the number of moles of ions:
0.14 mol ions
