1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Maru [420]
3 years ago
9

HELPP!!

Chemistry
1 answer:
katrin [286]3 years ago
4 0

Answer:

0.119 moles

Explanation:

molar mass of Fe = 55.845g

to find moles = mass/ molar mass

so moles of Fe = 20/55.845

= 0.358 moles

for the equation you are given

for every three Fe, it produces 1 Fe3O4 , meaning the ratio is 3:1

if you have 0.358 moles of Fe, that means the number of moles of Fe3O4  will equal to one third of that,

thus

moles of Fe3O4 = 1/3 x 0.358 = 0.119

You might be interested in
Which pair shares the same empirical formula? C2H4 and C6H6 CH2 and CH4 CH3 and C2H6 CH and C2H4
hoa [83]

Answer:

CH3 and C2H6

Explanation:

4 0
3 years ago
Read 2 more answers
Describe the process you used to build a model. What did you do first? second?
dimaraw [331]
First read the introduction.

Seconds look at the pictures how to build it.
3 0
3 years ago
In adding the measurements 11.074 m, 18.2m, and 16.943 m, what should be the number of scientific figures in the result
Artemon [7]

18.2 is the best answer

6 0
3 years ago
An isopropyl solution contains 70 ml of isopropyl alcohol in 1.8 L of water. What is the percent by volume of the alcohol
xenn [34]

Answer:

3.74%

Explanation:

We express a solution's volume by volume percent concentration, % v/v,

Take the ratio of the isopropyl alcohol (IPA) volume to the total volume of the solution, which is 1800 mL of water+ 70 mL of IPA,

and multiply by 100 to get the percentage:   70/(1800+70) *100 = 0.0374*100 =  3.74%

5 0
3 years ago
Fill in the Blank Question
creativ13 [48]

Answer:

Protons

Explanation:

It's the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Hope this helped, can I also get brainliest plz?

7 0
2 years ago
Read 2 more answers
Other questions:
  • What are some observable properties that can be used to identify these metals?
    8·1 answer
  • Boron occurs naturally as two isotopes. What is the difference between these isotopes?
    14·2 answers
  • rite stepwise equations for protonation or deprotonation of this polyprotic species in water. What are the products of the first
    12·1 answer
  • Which of the following is a physical change?
    15·1 answer
  • How many moles are in 100.56g HCI?
    14·1 answer
  • Convert 533 cm/s to units of meters per minute. Show the unit analysis by dragging the conversion factors into the unit‑factor s
    8·1 answer
  • Yo momma a BlXLXLTCH !<br><br> kyxs so hard where u drai
    13·1 answer
  • Anybody?i will appreciate it
    12·1 answer
  • I can't write one song that's not about you<br> Can't drink without thinkin' about you
    13·1 answer
  • The _________ energy of a substance is the total kinetic and potential energies of its atoms and/or molecules.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!