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
snow_lady [41]
2 years ago
15

A compound is found to contain 25.24 % sulfur and 74.76 % fluorine by weight. The molecular weight for this compound is 254.14 g

/mol. What is the molecular formula for this compound
Chemistry
1 answer:
Savatey [412]2 years ago
4 0

Answer:

S_2F_{10}

Explanation:

Hello!

In this case, since the empirical formula of a chemical compound is determined by assuming the by-mass percentages are masses, we can firstly compute the moles of sulfur and fluorine based on their atomic masses:

n_S=25.24gS*\frac{1molS}{32.01gS}=0.789molS\\\\n_F=74.76gF*\frac{1molF}{19.00gF}=3.93molF

Next, we compute the subscript of each element in the formula by dividing each moles by the fewest moles:

S=\frac{0.789}{0.789}=1\\\\F=\frac{3.93}{0.789} =5

Whose molar mass is 127.01 g/mol. Now, we can compute the ratio between the molecular and empirical formulas as follows:

ratio=\frac{254.14}{127.01} =2

Thus, the molecular formula is:

S_2F_{10}

Regards!

You might be interested in
One of the products of a fermentation reaction is
Alex73 [517]
There are two types of fermentation aerobic and anaerobic. Aerobic are those that need oxygen to ferment while anaerobic are those who do not need oxygen. Products of fermentation are usually water, ethanol, lactic acid and carbon dioxide. Other products are acetone and butyric acid.
5 0
3 years ago
State two ways of measuring the quantity of reactant or product
Bezzdna [24]

Answer:

If a reaction produces a gas such as oxygen or carbon dioxide, there are two ways to measure the reaction rate: using a gas syringe to measure the gas produced, or calculating the reduction in the mass of the reaction solution.

6 0
2 years ago
Read 2 more answers
What role does photosynthesis have in the carbon cycle?
hram777 [196]

Answer:

I think option A..

Explanation:

hope it's help uu

if wrong then sry

6 0
2 years ago
Read 2 more answers
Explain why some pesticides bioaccumulate whereas others do not
KatRina [158]
Bioaccumulation refers to the accumulation of chemicals in a living organism. The compound or chemical accumulates at a rate faster than it is being metabolized or excreted by the organism. Chemicals bioaccumulate by binding to the proteins and fats in an organism while others bioaccumulate through the repeated consumption of contaminated organisms. 

Pesticides containing chemicals that dissolve easily in fat but not in water tend to bioaccumulate. Pesticides that contain chemicals that can easily be metabolized by organisms do not bioaccumulate. In summary, the nature of the chemical used in pesticides and the capability of organisms to metabolize the said chemicals can dictate whether it will bioaccumulate or not.
7 0
3 years ago
Choose the molecule(s) that will only show two signals, with an integration ratio of 2:3, in their 1H NMR spectrum.
mrs_skeptik [129]

The question is missing the molecules in which the integration ratio of 2:3 will be observed. The complete question is given in the attachment.

Answer:

Molecule (a), (c), and (f) will show two peaks with the integration ratio of 2:3 in their 1H NMR spectrum

Explanation:

In the 1H NMR spectrum, the peak area is dependent on the number of hydrogen in a specific chemical environment. Hence, the ratio of the integration of these signals provides us with the relative number of hydrogen in two peaks. This rationale is used for the assignment of molecules that will give 2:3 integration ratio in the given problem.

  • Molecule (a) have two CH₂ and three CH₃ groups. Hence, it will give two peaks and their integration ratio becomes 2:3 (Answer)
  • Molecule (b) contains three chemical environments for its hydrogen atoms
  • Molecule (c) have a single CH₂ and CH₃ group giving integration ratio of 2:3 (Answer)
  • Molecule (d) will give two peaks but their ratio will be 1:3 because of two hydrogens of CH₂ and six hydrogens from two CH₃ groups
  • Molecule (e) have three CH and three CH₃ groups, so their ratio will become 1:3
  • Molecule (f) contains four CH and two CH₃ groups, giving two peaks. So, the integration ratio of their peaks is 2:3 (Answer)
  • Molecules
  • (g)
  • and
  • (h)
  • both have two CH and two CH₃ groups giving two peaks with the integration ratio of 1:3

3 0
3 years ago
Other questions:
  • Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits.
    7·1 answer
  • Which of the following microscopic soil life forms is also known as a “ring worm”?
    9·2 answers
  • Please answer in details. what class of carbon is coal ​
    7·1 answer
  • 2. Which types of changes observe the law of
    8·1 answer
  • What is the colour of Bromine
    11·2 answers
  • The amount of kinetic energy an object has depends on which feature of the object?
    8·1 answer
  • A chemist adds 370.0mL of a 1.41/molL potassium iodide KI solution to a reaction flask. Calculate the millimoles of potassium io
    8·1 answer
  • How many digits to the right of the decimal point should be used to report the result?
    6·1 answer
  • A weak acid, ha, has a p������a of 4. 524. If a solution of this acid has a ph of 4. 799 , what percentage of the acid is not io
    14·1 answer
  • Which one of these is not involved in a Combustion reaction ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!