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
jonny [76]
3 years ago
6

A form of phosphorus called red phosphorus is used in match heads. When 0.062 g of red phosphorus burns in air, it forms 0.142 g

of phosphorus oxide. Determine the empirical formula of phosphorus oxide.(show work; use labels)
Chemistry
1 answer:
zmey [24]3 years ago
4 0

Answer: The empirical formula is P_2O_5

Explanation:

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

a) If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of P = 0.062 g

Mass of O= (0.142- 0.062) = 0.08 g

Step 1 : convert given masses into moles

Moles of P=\frac{\text{ given mass of P}}{\text{ molar mass of P}}= \frac{0.062g}{31g/mole}=0.002moles

Moles of O=\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{0.08g}{16g/mole}=0.005moles

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For P = \frac{0.002}{0.002}=1

For O =\frac{0.005}{0.002}=2.5

The ratio of P: O = 1: 2.5

Converting them into whole number ratios by multiplying with 2:

Hence the empirical formula is P_2O_5

You might be interested in
Write a balanced half-reaction describing the reduction of aqueous vanadium(V) cations to aqueous vanadium(I) cations.
11Alexandr11 [23.1K]

Explanation:

Reduction is a chemical reaction in which electrons are gained by one of the atoms taking part in the reaction and lowering of an oxidation state of that atom.

Reduction takes place at the cathode.

In aqueous, vanadium(V) is present in +5 oxidation state which on reduction changes to vanadium(I) with +1 oxidation state.

The half reaction is :

V^{5+}(aq)+4e^- \rightarrow V^{1+}(aq)


5 0
3 years ago
Read 2 more answers
How can flood water affect the public drinking water supply?
storchak [24]
Flood water will ruin the clean water. This will cause the water to be undrinkable. Flood water will get into homes and ruin roads. Even though it may seem like it is doing a good thing by adding more water, the water is not filtered and clean for drinking.
8 0
3 years ago
Flocabulary circulation
Anastasy [175]

Answer: the system of blood, blood vessels and the heart that carries blood throughout the body

Explanation: i hope this helps

3 0
2 years ago
A simple pendulum of length 1.00 m has a mass of 100 g attached. It is drawn back 30.0° and then released. What is the maximum s
Softa [21]

Answer:

4.16ms-1

Explanation:

Vmax=√2gl(1-cos30)

=√2x 10x 1(1-cos30)

=√20x (1-cos 30)

√17.3205

=4.16ms-1

4 0
3 years ago
In each reaction box, place the best reagent and conditions from the list below.
Serggg [28]
This is a two step step reaction as shown below,

Step 1:
           Epoxidation of Alkene:
                                              In first step Cyclohexene is treated with peroxybenzoic acid in the presence of Dichloromethane which results in the formation of epoxide moiety.

Step 2:
           Nucleophillic Substitution Reaction:
                                                                  In second step the epoxide formed is treated with Sodium Methoxide which acts as a nucleophile and attacks the less hindered carbon of epoxide resulting in the formation of final product as shown below.

8 0
3 years ago
Other questions:
  • What is the charge on a fluorine ion? explain answer plz
    7·1 answer
  • Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
    7·2 answers
  • How does the fossil record suggest common ancestry?
    13·1 answer
  • A chemist wants to examine specific chemical reactions and isolate certain products using a controlled experiment. How would the
    9·1 answer
  • Please help. Where it it stored in?
    9·1 answer
  • Which best describes a chemical reaction that follows the law of conservation of matter?
    13·1 answer
  • What element is CU?plz helpppp
    9·2 answers
  • Study the solutions in the glasses. Put the solutions in order from concentrated to dilute.
    11·1 answer
  • Need done ASAP HELP MEEE
    13·1 answer
  • HELP! 10 pts!! || Which does NOT describe a water molecule?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!