Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. tia has a sample of pure gold (au). she weighed th

Tia has a sample of pure gold (Au). She weighed the sample and the result was...

Free

70.2K

Verified Solution

Question

Chemistry

Tia has a sample of pure gold (Au). She weighed the sample andthe result was 12.6 grams. Tia wants to determine the number ofatoms in the sample. Calculate the number of atoms in 12.6 g ofpure gold.

Answer & Explanation Solved by verified expert
4.5 Ratings (825 Votes)

Given mass of gold(Au) is , m = 12.6 g

We know that molar mass of Au is 197 (g/mol)

So number of moles , n = mass/molar mass

                                   = 12.6 g / 197 (g/mol)

                                   = 0.064 mol

Therefore the number of atoms in the sample is 0.064 mol

-----------------------------------------------------------------------------------------------------------

We know that 1 mole of any compound contains avagadro number(6.023x1023) of atoms

                                   OR

197 g(1 mole) of Au contains 6.023x1023 atoms

12.6 g of Au contains N atoms

N = (6.023x1023 x12.6) / 197

   = 3.85x1022 atoms

Therefore the number of atoms in 12.6 g of pure gold is 3.85x1022 atoms
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Basic Math
1.2K views

You are to calculate the mean and standard deviation for the rate of returns for IBM...

Chemistry
1.2K views

In Michaelis-Menten kinetics, what values would make an enzyme “good” at catalysis?

Basic Math
1.2K views

A) Body mass index (BMI) in children is approximately normally distributed with a mean of 24.5...

Geometry
1.2K views

What is m WTV T W 130 90 O 30 O 45 O 60 O...

Basic Math
1.2K views

Show that AB and BA are not equal for the given matrices 1 A 4...

Calculus
1.2K views

Is it possible to multiply the following matrices 2 A 0 L5 O Yes 1...

Calculus
1.2K views

The function f x Using a calculator and remembering that if x ER sin x...

Algebra
1.2K views

Solve the equation (1+i)2 = -1+?3i and list all possible solutions in Euler form with...

Accounting
1.2K views

Exeter has a material standard of 1 pound per unit of output. Each pound has...

Accounting
1.2K views

TurStuff, Inc., sells a wide range of drums, bins, boxes, and other containers that are...

Finance
1.2K views

U.S. Dollar/Euro. The table, , indicates that a 1-year call option on euros at a...

Finance
1.2K views

I don't know why my answer is wrong. Doc1 Q- Search in Document Home...