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
MAVERICK [17]
3 years ago
9

The total number of atoms represented by the formula Fe3(PO4)2 is

Chemistry
2 answers:
In-s [12.5K]3 years ago
8 0
C is the answer 3 + 2 +8 = 13
horsena [70]3 years ago
7 0

Answer:

C.

Explanation:

We have to keep in mind for this question that we have to take into account the <u>subscripts</u>.

Fe_3(PO_4)_2

The <u>subscript will affect only the number in the left</u>, so the first part would be:

Fe_3

In this part we will have 3 iron atoms. Then we will have:

(PO_4)_2

In the PO_4 we will have 1 atom of P and 4 atoms of O. (When we dont have any number as subscript we have to <u>assume that we have a "1</u>")

Then we have a "2" out side the the parenthesis (PO_4)_2, so we have to multiply by "2" all the <u>atoms inside the parenthesis</u>, so:

1 atom of P x 2 = 2

4 atoms of O x 2 = 8

So, in total we will have:

3 atoms of Fe + 8 atoms of O + 2 atoms of P = <u>13 atoms</u>

You might be interested in
The type of change that occurs when a solid becomes a liquid is _____.
Brilliant_brown [7]
This is going to be a <em>phase </em>change!
4 0
3 years ago
Read 2 more answers
PLEASE HELP! I really don’t understand! Thanks!
PIT_PIT [208]

http://century.rochester.k12.mn.us/cms/One.aspx?portalId=3086882&pageId=6133921

Hope this helps!

Please mark brainliest. :)

6 0
3 years ago
Given the chemical reaction Fe3O4 + H2 ⟶ Fe + H2O, identify the coefficient of H2O in the balanced equation.
Nesterboy [21]

Answer:

fe3o4+4h2 - 3fe + 4h2o

therefore coefficient is 4

6 0
3 years ago
In this experiment we will be using a 0.05 M solution of HCl to determine the concentration of hydroxide (OH-) in a saturated so
gulaghasi [49]

<u>Answer:</u> The moles of hydroxide ions present in the sample is 0.0008 moles

<u>Explanation:</u>

To calculate the concentration of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl.

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is Ca(OH)_2

We are given:

n_1=1\\M_1=0.05M\\V_1=16mL\\n_2=2\\M_2=?M\\V_2=36.0mL

Putting values in above equation, we get:

1\times 0.05\times 16=2\times M_2\times 36\\\\M_2=\frac{1\times 0.05\times 16}{2\times 36}=0.011M

To calculate the moles of hydroxide ions, we use the equation used to calculate the molarity of solution:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}

Molarity of solution = 0.011 M

Volume of solution = 36.0 mL

Putting values in above equation, we get:

0.011=\frac{\text{Moles of }Ca(OH)_2\times 1000}{36}\\\\\text{Moles of }Ca(OH)_2=\frac{0.011\times 36}{1000}=0.0004mol

1 mole of calcium hydroxide produces 1 mole of calcium ions and 2 moles of hydroxide ions.

Moles of hydroxide ions = (0.0004 × 2) = 0.0008 moles

Hence, the moles of hydroxide ions present in the sample is 0.0008 moles

8 0
3 years ago
How many total atoms are in 0.380 g of P2O5
pogonyaev
The gram formula mass of P2O5 is 31*2 + 16*5 =142. The mole number of P2O5 is 0.380/142=0.00268 mol. There is 7 atom in one P2O5 molecule. And there is 6.02 * 10^23 molecule per mol. So the answer is 1.13*10^22 atoms.
7 0
3 years ago
Other questions:
  • What would happen if prey was removed from the food web need asap
    8·2 answers
  • Calcium has a cubic closest packed structure (fcc) as a solid. Assuming that calcium has an atomic radius of 197 pm, calculate t
    12·1 answer
  • Use Hess's Law to determine the enthalpy change (∆H) for the reaction: ClF + F2 → ClF3 Given: 2ClF + O2 → Cl2O + F2O. ∆H=167.4kJ
    14·1 answer
  • Does the mineral cobalt have cleavage or fracture?.
    6·1 answer
  • Argon, which comprises almost 1% of the atmosphere, is approximately 27 times more abundant than CO 2, but does not contribute t
    10·1 answer
  • With term describes the group of plants that most belong to?
    5·1 answer
  • Explain why, if soil on a vehicle is in a clump, care<br> should be taken to keep the clump intact.
    15·1 answer
  • Help mee what’s 1+1
    6·2 answers
  • A root is an example of a/an-<br><br> A: tissue <br> B: cell type<br> C:organ<br> D:organism
    13·2 answers
  • 2. What is the chance that a carbon-14 atom will decay in six thousand years?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!