Ask Question
4 November, 23:07

A sample of gold (Au) has a mass of 35.12 g.

a.

Calculate the number of moles of gold (Au) in the sample and record in

Table 1. Show your work.

b.

Calculate the number of atoms of gold (Au) in the sample and record in Table 1. Show your work

+2
Answers (1)
  1. 4 November, 23:37
    0
    a) 0.1783 mol

    b) 1.07*10^23 atoms

    Explanation:

    Step 1: Data given

    Mass of gold (Au) = 35.12 grams

    Molar mass of gold (Au) = 196.97 g/mol

    Number of Avogadro = 6.022 * 10^23 / mol

    Step 2: Calculate number of moles gold

    Number of moles = Mass of gold / molar mass of golf

    Number of moles = 35.12 grams / 196.97 g/mol

    Number of moles = 0.1783 moles

    Step 3: Calculate number of atoms of gold

    Number of atoms = number of moles * Number of Avogadro

    Number of atoms = 0.1783 * 6.022 * 10^23 / mol

    Number of atoms = 1.07*10^23 atoms
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A sample of gold (Au) has a mass of 35.12 g. a. Calculate the number of moles of gold (Au) in the sample and record in Table 1. Show your ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers