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
vaieri [72.5K]
2 years ago
12

How many grams of fe2o3 are present in 0.82 mol?

Chemistry
2 answers:
muminat2 years ago
6 0

Answer:- There are 131 g of Fe_2O_3 in 0.82 moles of it.

Solution:- It is a mol to gram conversion. We have been given with 0.82 moles of Fe_2O_3 and asked to convert it to grams.

For mol to gram conversion we multiply the moles by the molar mass.

Atomic mass of Fe is 55.85 and atomic mass of O is 16. So, molar mass of Fe_2O_3 = 2(55.85) + 3(16)

= 111.7 + 48

= 159.7(\frac{g}{mol})

Let's convert the moles to grams as:

0.82mol(\frac{159.7g}{mol})

= 131 g

So, there are 131 g of Fe_2O_3 present in 0.82 mol of it.


mars1129 [50]2 years ago
5 0
130.954g of Fe2O3 in 0.82 mol
You might be interested in
If a car is traveling 100 km/h and comes to a stop in 3 minutes,what is acceleration of a passenger who is using vehicle restrai
Rama09 [41]

We are given –

  • Final velocity of car is, v= 0
  • Initial velocity of car is, u= 100 km/hr
  • Time taken, t is = 3 minutes or 180 sec

Here–

\qquad\pink{\bf \longrightarrow  Initial\:  velocity =  100 \:km/hr}

\qquad\sf \longrightarrow  Initial\:  velocity = \dfrac{ 100 \times 1000}{3600} \:m/s

\qquad\pink{ \bf \longrightarrow  Initial\:  velocity = 27.78\: m/s}

Now –

\qquad____________________________

\qquad\purple{\bf \longrightarrow  Acceleration  = \dfrac{Final\: Velocity -Initial  \:Velocity }{Time}}

\qquad\purple{\bf \longrightarrow  Acceleration  = \dfrac{v -u}{t}}

\qquad\sf \longrightarrow  Acceleration = \dfrac{(0- 27.78)}{1800}

\qquad\sf \longrightarrow  Acceleration =\cancel{ \dfrac{- 27.78}{1800}}

\qquad\purple{\bf \longrightarrow  Acceleration = -0.15 \: m/s^2}

\qquad_______________________________

6 0
2 years ago
If metal ions in a solution were reduced, what would you expect to see?
marysya [2.9K]

Answer:

Solid metal

Explanation:

The reduced form of metal ions is the metal in elemental state (simple substance). So, if you have a solution with metal ions and they are reduced, you probably will see the deposition of the metal. For example: if you have a solution with sodium ions (Na⁺), and the ions are then reduced, you will see the aparition of a solid phase of metallic sodium (Na(s)), according to the following half-reaction:

Na⁺ + e- → Na(s)

8 0
2 years ago
A 50.0 g sample of scandium, sc, is heated by exposure to 1.50 x 10 3 j. The temperature of the sc is raised by 61.1 o
statuscvo [17]

Given mass of Scandium = 50.0 g

Increase in temperature of the metal when heated = 61.1^{0}C

Heat absorbed by Scandium = 1.50*10^{3}J

The equation showing the relationship between heat, mass, specific heat and temperature change:

Q = m C (deltaT)

Where Q is heat = 1.50*10^{3}J

m is mass = 50.0 g

ΔT = 61.1^{0}C

On plugging in the values and solving for C(specific heat) we get,

1.50*10^{3}J=50.0g(C)(61.1^{0}C)

C = 0.491\frac{J}{g^{0}C }

Specific heat of the metal = 0.491\frac{J}{g^{0}C }

7 0
3 years ago
What us a bond between a positive and a negative ion called
Nat2105 [25]

Static. Is the bond if u need 2 know

6 0
3 years ago
Well i just had a major PTSD attack how is everyone i need to think about something else
Arada [10]

Answer:

Oh so so sorry about that. and thanks for caring for us. anyway we are good wbu

6 0
2 years ago
Read 2 more answers
Other questions:
  • How many grams of KBr are required to make 550. mL of a 0.115 M KBr solution?
    12·1 answer
  • Which organ system directs the other organ systems in our bodies?
    12·1 answer
  • What is the difference between breccia rock and conglomerate rock
    15·1 answer
  • Describe the molecular structure of water and explain why the water molecule is polar
    8·1 answer
  • What is the pH of a solution whose hydronium ion [H20+] (or proton [H+1)
    15·1 answer
  • In the pie chart below, which of the following represents the amount of Earth's water located in the oceans?
    13·2 answers
  • HELP HELP HELP PLSSS
    7·1 answer
  • #
    8·1 answer
  • Each organ system has specific functions for the body's survival. Which body system is responsible for carrying oxygen from the
    10·1 answer
  • What will happen to the salt when mixed to liquid?​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!