A compound is 70.0% iron and 30.0% oxygen. Its molecular mass is 479.1 g/mol. Determine the molecular formula.
Solved
Show answers
More tips
- S Sport How does Bodyflex work: what is it and how does it work?...
- O Other What is the oldest joke ever told?...
- F Food and Cooking How to Make Lazy Cabbage Rolls? Simple Steps to a Delicious Dish...
- F Food and Cooking Unusually Delicious Shashlik - Follow the Etiquette of Proper Preparation!...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
Answers on questions: Chemistry
- E English Which line from the poem contains hyperbole?...
- M Mathematics The Answers are: a. Quadrant III b. Quadrant IV c. Quadrant II d. Quadrant I...
- M Mathematics A group of friends were working on a student film. They spent all their budget on equipment and props. They spent $870 on equipment, and 13% of the total budget on...
- B Business Production costs can increase when . Multiple choice question. the power of suppliers goes down buyers demand lower quality and less service buyers demand higher quality...
- C Chemistry It is much easier to slice a piece of pie with the edge of a sharp knife than with the edge of a pencil. Explain this in terms of applied pressure. Just putting this...
Ответ:
Explanation:
Hello there!
In this case, since these problems about formulas, firstly require the determination of the empirical formula, assuming that the given percentages are masses, we can calculate the moles and mole ratio of oxygen to iron as shown below:
In such a way, by rounding to the first whole number we multiply by 8 and divide by 5 to obtain:
Whose molar mass is 159.69 g/mol and the mole ratio of the molecular to the empirical formula is:
479.1/159.69=3
Therefore, the molecular formulais:
Regards!
Ответ:
Reactivity
Explanation:
A physical property are properties that define or describe the state of matter. This includes color, temperature, density, mass etc
Chemical properties involve a change in the composition of matter. This includes, heat of combustion, enthalpy of formation etc
Based on the given examples:
Freezing point, boiling point and density are all physical properties associated with the state of a substance. These do not involve any change in composition. In contrast, reactivity is a chemical property as the composition of matter changes during the course of a reaction.