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
maks197457 [2]
3 years ago
13

How many total atoms are in 0.450 grams of P2O5

Chemistry
1 answer:
Nady [450]3 years ago
8 0
First, we need to figure out the molar mass of P2O5. 

P x 2: 30.97g x 2 = 61.94g
O x 5: 16.00g x 5 = 80.00g
                           + 141.94g

0.450g x 1 mole/141.94g = 0.00317 moles = 3.17 x 10^3 moles

Now we are going to use Avogadro's number (=6.02 x 10^23)

(3.17 x 10^3 moles) x (6.02 x 10^23 atoms) / (1 mole) = 1.91 x 10^27 atoms


You might be interested in
What relationship exists between two variables when their ratio is a constant? a negative slope a direct proportion an inverse p
Verdich [7]
Direct proportion

Hope this helps (:
6 0
3 years ago
Read 2 more answers
Determine the freezing point of a 0.51 molal
Elan Coil [88]

Answer:

-65.897°C.

Explanation:

  • Adding solute to water causes depression of the boiling point.
  • The depression in freezing point (ΔTf) can be calculated using the relation: <em>ΔTf = Kf.m,</em>

where, ΔTf is the depression in freezing point of chloroform solution.

Kf is the molal depression constant of chloroform (Kf = 4.70°C.kg/mol).

m is the molality of the solution (m = 0.51 m).

∴ ΔTf = Kf.m = (4.70°C.kg/mol)(0.51 m) = 2.397°C.

∴ The freezing point of the solution = (freezing point of chloroform) - ΔTf = (-63.5°C) - (2.397°C) = -65.897°C.

7 0
3 years ago
How do u think the hardness and the density of a mineral that formed through metamorphism would compare to a mineral that formed
gizmo_the_mogwai [7]
Metamorphism would compare to a mineral that formed through evaporation
4 0
3 years ago
Which example shows a community of organisms? A. a single monkey B. a group of tree monkeys C. a group of tree monkeys and a clu
DedPeter [7]
Your Answer is C because trees and monkeys are organisms cause there living.
4 0
3 years ago
Describe the rool each element plays in the life of a plant.<br> a)soil<br> b)water<br> c)light
bagirrra123 [75]
A)soil-to help get the plant its nutrition
b)water-for photosynthesis
c)light-to make their own food
6 0
3 years ago
Read 2 more answers
Other questions:
  • A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
    5·1 answer
  • Almost all amino acids are chiral. The body only uses L amino acids, and proteins are chains of amino acids that in the most sim
    14·1 answer
  • If I have a chemical with a 9 on the pH scale, is it safe to handle with the same gloves as I’ve handled fire with??
    15·1 answer
  • In a study of the conversion of methane to other fuels, a chemical engineer mixes gaseous CH4 and H2O in a 0.32-L flask at 1200
    7·1 answer
  • How did mendeleev arrange atoms in the periodic table?
    10·1 answer
  • Brass is an example of
    5·1 answer
  • Analyse the temperature versus time graph of water, given below.
    7·1 answer
  • List four rules for rounding numbers.
    9·1 answer
  • Which of the following is true about gravity? Select all that apply.
    15·2 answers
  • Please help!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!