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
joja [24]
3 years ago
10

How many atoms are in 2 Fe? 1 2 3 4

Chemistry
1 answer:
otez555 [7]3 years ago
4 0

Answer:

2 (two) atoms of iron

Explanation:

You might be interested in
Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 7.80 moles of magnesium perchlorate, Mg(ClO4)2.
Dmitry [639]
 The number of moles of moles of  Magnesium,chlorine and oxygen atoms in 7.80 moles of Mg(ClO4)2 is calculated as below

find the total number of each atom in Mg(ClO4)2

that is mg = 1 atom
        Cl =  1x2 = 2 atoms
        O  = 4  x2 = 8 atoms

then multiply 7.80 moles with total number of each atom , to get the number moles of each atom
that is

Mg = 7.80 x1= 7.80  moles
cl =   7.80  x2=15.6  moles
O =  7.80 x8= 62.4 moles

5 0
3 years ago
What mass of iron is formed when 10 grams of carbon react with 80 grams of iron iii oxide?
yKpoI14uk [10]

Answer:

55.85 grams of Fe is formed.

Explanation:

Identify the reaction:

2Fe₂O₃  +  3C  →  4Fe  +  3CO₂

Identify the limiting reactant, previously determine the mol of each reactant

(mass / molar mass)

10 g / 12 g/m = 0.83 moles C

80 g / 159.7 g /m = 0.500 moles Fe₂O₃

2 moles of oxide need 3 moles of C, to react

0.5 moles of oxide, will need ( 0.5  . 3)/ 2 = 0.751 mol

I have 0.83 moles of C, so C is the excess.

The limiting is the oxide.

3 mol of C need 2 mol of oxide to react

0.83 mol of C, will need (0.83  . 2)/ 3 = 0.553 mol of oxide, and I only have 0.5 (That's why Fe₂O₃ is the limiting)

Ratio is 2:4 (double)

If I have 0.5 moles of oxide, I will produce the double, in the reaction.

1 mol of Fe, will be produce so its mass is 55.85 g

5 0
3 years ago
I am a little confused
Sonbull [250]
The answer is D. I did that and i got it right.
7 0
3 years ago
Read 2 more answers
Consider the following reaction: 2H2S (g) + 3O2 (g)  2SO2 (g) + 2H2O (g) If O2 was the excess reagent, 8.3 mol of H2S were cons
Ganezh [65]

1. The balanced equation tells us that 2 moles of H2S produce 2 moles of H2O.  

8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced  

8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically  

% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 % yield  

2. Calculate moles of each reactant.  

150.0 g N2 x (1 mole N2 / 28.0 g N2) = 5.36 moles N2  

32.1 g H2 x (1 mole H2 / 2.02 g H2) = 15.9 moles H2  

The balanced equation tells us that we need 3 moles of H2 to react with every 1 mole of N2.  

So if we have 5.36 moles N2, we need 3x that = 16.1 moles H2. Do we have that much available? No, just under at 15.9 moles. So H2 is the limiting reactant. At the end of the reaction there will be a little N2 left over.

8 0
3 years ago
Read 2 more answers
How are cations formed
sweet [91]

cations are formed when a metal loses electrons, and a nonmetal gains those electrons.

7 0
3 years ago
Other questions:
  • A sample of well water is tested and found to have 1350 ppm Iron. If a 1000g sample was tested, how many grams of iron were in i
    5·1 answer
  • How does air resistance affect the velocity of a falling object ?
    6·1 answer
  • What was the period of time in london called because of the cold temp​
    13·1 answer
  • Which type of property can be observed only by changing a substance into a different substance? A. intensive property B. extensi
    8·2 answers
  • The surface temperatures on land vary more over the course of a year than the surface temperatures on the ocean because land has
    9·1 answer
  • What do the results tell you about your hypothesis(es)? How do the data support your claim above?
    7·1 answer
  • Weeks and how much money, in dollars, Jamal deposits into the savings account.
    6·1 answer
  • How many atoms are in 5Na3PO4​
    15·1 answer
  • I will give brainliest. 1. A spiderweb and a Kevlar jacket have some obvious differences. Which property is similar between the
    14·1 answer
  • You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is th
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!