Question

4) Hypothetical Data for Analysis An oxide of iron is 69.94% iron by mass. Calculate its empirical formula and determine the

0 0
Add a comment Improve this question Transcribed image text
✔ Recommended Answer
Answer #1

%Fe = 69.94% %O = (100-69.94)% = 30.06% 100 g of compound contains 69.94 g Fe and 30.06 g C1 Number of moles of Fe = 69.94 g

Add a comment
Know the answer?
Add Answer to:
4) Hypothetical Data for Analysis An oxide of iron is 69.94% iron by mass. Calculate its...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • chemistry

    An oxide of iron is 69.94% iron by mass. Calculate its empirical formula and determine the name of the ionic compound. (Hint: assume you have a 100 g sample of the oxide of iron. How many grams would be iron? Then how many grams would be oxygen? Convert those to moles. Find the ratio. Find the nearest whole number ratio). Then determine its name.  

  • A sample of an oxide of iron was found to contain 72.34% by mass of iron and 27.66% by mass of oxygen. What is the empir...

    A sample of an oxide of iron was found to contain 72.34% by mass of iron and 27.66% by mass of oxygen. What is the empirical formula for this compound? (The correct answer is Fe3O4, but I’m not sure how to do the math)

  • Experiment 7 Empirical Formula Objectives: Determine the expected formula for the ionic oxide expected when Mg...

    Experiment 7 Empirical Formula Objectives: Determine the expected formula for the ionic oxide expected when Mg reacts with O2 Find the theoretical and actual yields of magnesium oxide Evaluate results using stoichiometry and error analysis Introduction: The goal of this experiment is to determine the Empirical Formula of a Compound. (The Empirical Formula of a Compound is the simplest whole number ratio between the elements of a compound) If one can synthesize a compound from elements, then it is possible...

  • help me solve please. im stumped EMPIRICAL FORMULA OF MAGNESIUM OXIDE COMPOUND INDIVIDUAL DATA Mass of...

    help me solve please. im stumped EMPIRICAL FORMULA OF MAGNESIUM OXIDE COMPOUND INDIVIDUAL DATA Mass of Empty Crucible (g) + lid 41.3549 47.4 Mass of the Magnesium (g) Mass of the Crucible with Contents After the Reaction (g) Mass of the Contents (Magnesium Oxide) Alone (g) 47.253941613 416959 4099 41 a 42.200 a 1.513 1o. 2719 10.1159 | 103 10.014 mol , 0168 ml 1.0169 10.017 mol 1.007 1.000644 Mass of the Oxygen in the Magnesium Oxide (g) Moles of...

  • NAME: DATE: SECTION/GROUP: INSTRUCTOR: DATA ANALYSIS OBSERVATIONS Anything you observed, condensation, steam, smoke, spilled compound, etc....

    NAME: DATE: SECTION/GROUP: INSTRUCTOR: DATA ANALYSIS OBSERVATIONS Anything you observed, condensation, steam, smoke, spilled compound, etc. EMPIRICAL FORMULA OF MAGNESIUM OXIDE COMPOUND INDIVIDUAL DATA Mass of Empty Crucible (8) 42.9356 43.6656-42.1356 -0.73, Mass of the Magnesium (g) 3 Mass of the Crucible with Contents After the Reaction (g) | 44. 167g Mass of the Contents (Magnesium Oxide) Alone (8) Mass of the Oxygen in the Magnesium Oxide (g) Moles of Magnesium (mol) D 44.167 - 42.9351. = 1.259 ED-B 0.5g...

  • Lab #19; Empirical Formula of Magnesium Hydroxide Pre-Lab Questions Name: Heating 1.29 g of gallium gives...

    Lab #19; Empirical Formula of Magnesium Hydroxide Pre-Lab Questions Name: Heating 1.29 g of gallium gives a gallium-oxygen compound with a mass of 1.739 Calculate the empirical formula of the compound. Step 1: Figure out how many grams of oxygen are in the 1.73 grams of gallium-oxygen compound. Step 2: Convert the 1.29 g of gallium to moles: Step 3: Convert the grams of oxygen you calculated in step 1 to moles: Step 4: Figure out the formula. Formula Name

  • How do I calculate the emperical formula for the magnesium oxide compound? Empirical Formula of Magnesium...

    How do I calculate the emperical formula for the magnesium oxide compound? Empirical Formula of Magnesium Oxide Compound Group Data: For these calculations, obtain the data shown on the previous page for two other groups. Make calculations here using your data and the data from the two other groups. Average Moles of Magnesium (mol) O. 0181 O.0025 Standard Deviation in Moles of Magnesium (mol) Average Moles of Oxygen (mol) rolo2 O. 00683 3:2 Standard Deviation in Moles of Oxygen (mol)...

  • help!! Name 1. Iron reacts with oxygen to form solid iron(IlI) oxide. a) Write a balanced...

    help!! Name 1. Iron reacts with oxygen to form solid iron(IlI) oxide. a) Write a balanced chemical equation for the reaction. b) If 4.0g iron completely reacted, how many grams of iron(IlI) oxide would form? Work Check c) If 3.0g oxygen completely reacted, how many grams of iron(ll) oxide would form? d) If 4.0g iron reacted with 3.0g oxygen, which one would be the limiting reagent? e) How much iron(ll ) oxide would theoretically form? A student mixed 3.0g 02...

  • Data Table 1. CuSO4 Data Mass of empty cup (grams) Mass of CuSO, hydrate (erams)S Cuso,...

    Data Table 1. CuSO4 Data Mass of empty cup (grams) Mass of CuSO, hydrate (erams)S Cuso, hydrate after 1st heating (grams) CuSO, hydrate after 2nd heating (grams) Mass of released H20 (grams) Number of moles of released H201 Mass of anhydrous Cuso (grams) Number of moles of anhydrous CuSO 02a mo Questions: A) Calculate the ratio of moles of H2O to moles of anhydrous Cuso4. Note: Report the ratio to the closest whole number. B) Write the empirical formula for...

  • please show how to calculate molar mass, and how to calculate mole from molar mass..please will...

    please show how to calculate molar mass, and how to calculate mole from molar mass..please will give a thumbs up 11. What is the percent water in lithium nitrate trhydrate? (Show work for credit) 12. In another experiment, the mass of a hydrate was found to be 2.7090 grams. After heating, the anhydrous sample had a mass of 1.8820 grams. Answer the folowing and show al work for credit a. What was the mass of water lost? b. How many...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT