Hello, I have an issue with calculations and I am not sure ,if I get correct answers,because (for example in question 38 my answer is negative)  Could you show me calculations and empirical formula? (#2 in data sheet is 16.059) Thank you 36) After you leave the lab, calculate mass of Mg. Take entry 2), “Mass of crucible, lid and Mg” minus entry 1) “Mass of empty crucible and lid”. Record result into Entry 4 37) Calculate mass of magnesium oxide: Take Entry 3, “Mass of Crucible, lid and magnesium oxide” minus Entry 1, “Mass of empty crucible and lid”. Record result in Entry 5. 38)  Calculate mass of O: take Entry 5, “Mass of oxide” minus Entry 3 “Mass of magnesium”. Recordresult into Entry 6 39)  Convert mass of Mg to moles. Take Mass of Mg, Entry 4, and multiply it by (1 mol / 24 g). Record result into Entry 7 40)  Calculate moles of oxygen. Take mass of O, Entry 6, multiply it by (1 mol / 16 g) and record result in Entry 8. 41)  Decide which of Entry 7 and 8 is smaller. Write the value into Entry 9 42)  Divide number of moles of Mg, Entry 7, by number in Entry 9. Round to a whole number and record in Entry 10. 43)  Divide moles of O, Entry 8, by number in Entry 9. Round result to a whole number, and record it in Entry 11. 44)  Entries 10 and 11 give you the subscripts in empirical formula of magnesium oxide. Write the formula in entry 12

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
Question

Hello,
I have an issue with calculations and I am not sure ,if I get correct answers,because (for example in question 38 my answer is negative) 
Could you show me calculations and empirical formula? (#2 in data sheet is 16.059)

Thank you

36) After you leave the lab, calculate mass of Mg. Take entry 2), “Mass of crucible, lid and Mg” minus entry 1) “Mass of empty crucible and lid”. Record result into Entry 4

37) Calculate mass of magnesium oxide: Take Entry 3, “Mass of Crucible, lid and magnesium oxide” minus Entry 1, “Mass of empty crucible and lid”. Record result in Entry 5.

  1. 38)  Calculate mass of O: take Entry 5, “Mass of oxide” minus Entry 3 “Mass of magnesium”. Recordresult into Entry 6

  2. 39)  Convert mass of Mg to moles. Take Mass of Mg, Entry 4, and multiply it by (1 mol / 24 g). Record result into Entry 7

  3. 40)  Calculate moles of oxygen. Take mass of O, Entry 6, multiply it by (1 mol / 16 g) and record result in Entry 8.

  4. 41)  Decide which of Entry 7 and 8 is smaller. Write the value into Entry 9

  5. 42)  Divide number of moles of Mg, Entry 7, by number in Entry 9. Round to a whole number and

    record in Entry 10.

  6. 43)  Divide moles of O, Entry 8, by number in Entry 9. Round result to a whole number, and record it

    in Entry 11.

  7. 44)  Entries 10 and 11 give you the subscripts in empirical formula of magnesium oxide. Write the

    formula in entry 12.

Calculations
Results
N/A
1) Mass of empty crucible and lid
15.625
6.059
2) Mass of crucible, lid and Mg
N/A
3) Mass of Crucible, lid and
16.324
N/A
magnesium oxide
4) Mass of magnesium
O.434
5) Mass of magnesium oxide
6) Mass of oxygen
7) Moles of Mg
8) Moles of O
9) Smaller value, between 7) and 8)
10) Moles of Mg divided by smaller
number of moles
11) Moles of 0 divided by smaller
number of moles
12) Empirical formula
Transcribed Image Text:Calculations Results N/A 1) Mass of empty crucible and lid 15.625 6.059 2) Mass of crucible, lid and Mg N/A 3) Mass of Crucible, lid and 16.324 N/A magnesium oxide 4) Mass of magnesium O.434 5) Mass of magnesium oxide 6) Mass of oxygen 7) Moles of Mg 8) Moles of O 9) Smaller value, between 7) and 8) 10) Moles of Mg divided by smaller number of moles 11) Moles of 0 divided by smaller number of moles 12) Empirical formula
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

Blurred answer
Knowledge Booster
Combustion Analysis
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY