This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: An oxide of iron has the formula Fe3O4. What mass percent of iron does it contain? (Read 59 times)

anshika

  • Hero Member
  • *****
  • Posts: 510
on: Mar 21, 2021

Question 1

Ammonium sulfate, (NH4)2SO4, contains what percent nitrogen by mass?

◦ 42.4%
◦ 10.6%
◦ 21.2%
◦ 13.7%
◦ None of these are correct.

Question 2

An oxide of iron has the formula Fe3O4. What mass percent of iron does it contain?

◦ 0.72%
◦ 28%
◦ 30%
◦ 70%
◦ 72%
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by anshika on Mar 21, 2021

AaaA

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


anshika

  • Member
  • Posts: 510
Reply 2 on: Mar 21, 2021
Wow, this really help

softEldritch

  • Member
  • Posts: 334
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Brain mass as a function of body mass in mammals. Brain mass as a function of body mass in mammals.
Emission spectrum of iron Emission spectrum of iron
Stony-Iron Meteorite Stony-Iron Meteorite
Mass Loss by a Supermassive Star Mass Loss by a Supermassive Star
Iron Content of Oral Iron Formulations Iron Content of Oral Iron Formulations
Outcome of myocardial infarction. Forty percent of 1-week survivors have late complications ... Outcome of myocardial infarction. Forty percent of 1-week survivors have late complications ...
Video: Otitis Media

For a complete list of videos, visit our video library