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
wariber [46]
3 years ago
9

How many total atoms are in 0.670 g of p2o5?

Chemistry
1 answer:
scoray [572]3 years ago
8 0

The molecular formula for compound is  P_{2}O_{5} mass of compound is 0.670 g.

To calculate number of atoms first calculate number of moles in the compound as follows:

n=\frac{m}{M}

Molar mass of  P_{2}O_{5} is 283.886 g/mol, thus,

n=\frac{0.670 g}{283.886 g/mol}=0.00236 mol

Thus, number of mole of P_{2}O_{5} is 0.00236 mol.

From the molecular formula 1 mole of P_{2}O_{5} has 2 mol of P (phosphorus) and 5 mol of O (oxygen).

Thus, number of moles of P and O in 0.00236 mol of P_{2}O_{5} will be:

n_{P}=2\times 0.00236 mol=0.00472 mol

Similarly,

n_{O}=5\times 0.00236 mol=0.0118 mol

Now, in 1 mol of an element there are 6.023\times 10^{23} atoms.

Number of atoms of P will be:

N_{P}=0.00472\times 6.023\times 10^{23}=2.84\times 10^{21}atoms

Similarly, number of atoms of O will be:

N_{O}=0.0118\times 6.023\times 10^{23}=7.11\times 10^{21}atoms

Total number of atoms will be sum of number of atoms of P and O:

N_{Total}=N_{P}+N_{O}=2.84\times 10^{21}+7.11\times 10^{21}=9.95\times 10^{21} atoms

Therefore, total number of atoms in P_{2}O_{5} will be 9.95\times 10^{21} atoms.

You might be interested in
Describe one experiment that could be carried out to determine which chemical reaction, decomposition, dimerization, or racemiza
mash [69]

Answer:

Thermal decomposition

Explanation:

The thermal decomposition of amino acids could be carried out at different temperatures and at fixed pressure in a reactor. The effect of temperature on products and pathway could be determined by using time as a function. The hydrothermal decomposition of amino acids takes two key paths

1. The delamination of amino acids to produce ammonia and organi acids

2. The decarboxylation to produce amines and carbonic acids.

The thermal decomposition is and effective experiment that could determine the chemical reaction rate and order of reaction, since it's working with time.

8 0
3 years ago
Calculate the molar solubility of CaSO4. Ksp = 7.10 x 10-5
zubka84 [21]
Multiple or divide them
4 0
3 years ago
Read 2 more answers
What is the 10% rule? What is its significance? Why is energy lost?
TEA [102]
The 10% rule means that approximately there will be only 10% energy transferred from a trophic level into another. That was because the consumer on the upper level will use the energy before it was consumed. About 90% of the energy used so only 10% remain will be transferred.
Example: an antler eating grass with a total 100 calories. Then the antler is moving and growing, using 90 calories. Then a lion eats the antler, but the energy remains is only 10 calorie because 90 calories are already used.
4 0
3 years ago
How many carbon monoxide molecules are in 0.75 moles of carbon monoxide?
Hunter-Best [27]

Answer:

four 0.5 times 10 to the 23rd Adams of Neptune

Explanation:

3 0
1 year ago
Read 2 more answers
When light hits the Earth at a greater angle, what does this cause?​
crimeas [40]
Angle of Solar Radiation and Temperature
5 0
2 years ago
Other questions:
  • Which of the following is the basis Rutherford's planetary model
    9·2 answers
  • Which of the following is an alkali metal?
    12·2 answers
  • What is the pH of a solution with a hydrogen concentration of [H+] = 1 x 10-4 M?
    15·1 answer
  • Water can resist a greater external force than ethanol can. Which statement best describes this difference? Water has less capil
    13·2 answers
  • What type of electric cell would be best in a flashlight or smoke detector? Explain each choice
    6·2 answers
  • Which level of organization describes an oak tree forest with bacteria, fungi, dead leaves, butterflies, blue jays, stones?
    7·1 answer
  • What is most often the case when an ocean plate converges with another plate?
    10·2 answers
  • Which of the following ideas about the atom changed when new evidence was discovered?
    11·1 answer
  • Calculate the total consumer surplus in the amusement park market if they a 12
    15·1 answer
  • What 2 elements on the periodic table add some serious seasoning to boring foods
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!