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
sukhopar [10]
3 years ago
12

How many atoms are found in 4.75 moles of Fe?

Chemistry
1 answer:
aliya0001 [1]3 years ago
7 0

Answer:

The answer to your question is below

Explanation:

a)

Number of atoms = ?

moles of Fe = 4.75

-Use proportions to solve this problem

                            1 mol of Fe --------------------- 6.023 x 10²³ atoms

                          4.75 moles  ---------------------  x

                            x = (4.75 x 6.023 x 10²³) / 1

                            x = 2.86 x 10²⁴ / 1

  Number of atoms = 2.86 x 10²⁴

b)

Number of moles = ?

moles of 1.058 moles of H₂O

I think this question is incorrect, maybe you wish to know the number of atoms or grams of H₂O.

c)

Number of atoms = ?

moles of Fe = 0.759

                       1 mol of Fe ------------------ 6.023 x 10²³ atoms

                       0.759 moles ---------------  x

                        x = (0.759 x 6.023 x 10²³) / 1

                        x = 4.57 x 10²³ / 1

Number of atoms of Fe = 4.57 x 10²³ atoms

d)

Number of molecules = ?

moles of H₂O = 3.5 moles

                          1 mol of H₂O ------------------ 6.023 x 10²³ molecules

                         3.5 moles       ------------------   x

                          x = (3.5 x 6.023 x 10²³) / 1

                          x = 2.11 x 10²⁴ molecules

Number of molecules = 2.11 x 10²⁴                                                                        

You might be interested in
!!!!HELP PLEASE!!!!!Which of the following molecules has a trigonal pyramidal shape?
aksik [14]

Answer:

No.D is the molecules that has trigonal pyramidal sape

8 0
3 years ago
Read 2 more answers
Is mountain lions a herbivore
egoroff_w [7]
Mountain lion have to hunt other animals up in the Mountains. Other animals are meat. Therefore mountain lions are carnivores, not herbivores. 

I hope this helped!
If it did I would like it if I got brainliest :)
7 0
3 years ago
Read 2 more answers
A mouse is placed in a sealed chamber with air at 769.0 torr. This chamber is equipped with enough solid KOH to absorb any CO2 a
svlad2 [7]

<u>Answer:</u> The amount of oxygen gas consumed by mouse is 0.202 grams.

<u>Explanation:</u>

We are given:

Initial pressure of air = 769.0 torr

Final pressure of air = 717.1 torr

Pressure of oxygen = Pressure decreased = Initial pressure - Final pressure = (769.0 - 717.1) torr = 51.9 torr

To calculate the amount of oxygen gas consumed, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 51.9 torr

V = Volume of the gas = 2.20 L

T = Temperature of the gas = 292 K

R = Gas constant = 62.364\text{ L. Torr }mol^{-1}K^{-1}

n = number of moles of oxygen gas = ?

Putting values in above equation, we get:

51.9torr\times 2.20L=n\times 62.364\text{ L. Torr }mol^{-1}K^{-1}\times 292K\\\\n=\frac{51.9\times 2.20}{62.364\times 292}=0.0063mol

To calculate the mass from given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of oxygen gas = 0.0063 moles

Molar mass of oxygen gas = 32 g/mol

Putting values in above equation, we get:

0.0063mol=\frac{\text{Mass of oxygen gas}}{32g/mol}\\\\\text{Mass of oxygen gas}=(0.0063mol\times 32g/mol)=0.202g

Hence, the amount of oxygen gas consumed by mouse is 0.202 grams.

5 0
3 years ago
Points
ExtremeBDS [4]
The answer is D. A compound
6 0
3 years ago
Something that an animal does that is driven by instinct is called a??
Lunna [17]

Answer:

2. Behavioral Adaption

Explanation:

I know about this, I think this is the answer. Try it out!!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the amount of heat necessary to raise the temperature of 135.0 g of water from 50.4°F to 85.0°F. The specific heat of
    6·1 answer
  • Which is larger, 51.5 decigrams or 51,500 decigrams
    5·1 answer
  • Which of the following gases was most likely present in Earth’s earliest atmosphere?
    13·1 answer
  • Plz answer (g) i will give rating 5 and thanks who answer plz fast
    6·1 answer
  • An HCl solution has a pH of 3.350. After some NaOH was
    7·1 answer
  • The process by which organisms makes more<br> organisms like themselves is called
    13·2 answers
  • How does adding a lone pair affect the position of existing atoms and lone pairs
    9·2 answers
  • Equation for the reaction btn nitric acid and metal X whose valence is 3​
    15·1 answer
  • What are the most common sources of nitrates that lead to unhealthy water systems
    15·1 answer
  • State charles's law. If a balloon occupies 885 cm3 volume at 20°C and 794 cm3 at - 10°C , prove that this is according to charle
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!