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
Ber [7]
3 years ago
15

Antimony pentafluoride has a formula of SbF5. What is the percent composition of Sb in this molecule

Chemistry
1 answer:
Akimi4 [234]3 years ago
7 0

Answer:

56.17% is percent composition of Sb in the molecule

Explanation:

Percent composition is the percent in mass of each element present in a particular molecule.

In SbF₅, there is 1 mole of Antimony -Molar mass: 121.76g- per 5 moles of fluorine -Molar mass: 19g/mol-. In a basis of 1 mole, the mass of Sb and F is:

<em>Mass Sb:</em>

1mol * (121.76g/mol) = 121.76g

<em>Mass F:</em>

1 mol SbF₅ = 5 moles F * (19g / mol) = 95g

<em>Total mass:</em>

121.76g + 95g = 216.76g

And percent composition of Sb:

121.76g / 216.76g * 100 =

<h3>56.17% is percent composition of Sb in the molecule</h3>
You might be interested in
A 2.0 mol sample of ammonia is introduced into a 1.00 L container. At a certain temperature, the ammonia partially dissociates a
aleksley [76]

Answer:

K = 1.69M

Explanation:

For the reaction:

2NH₃(g) ⇄ N₂(g) + 3H₂(g)

K is defined as:

k = [N₂] [H₂]³ / [NH₃]² <em>(1)</em>

Molarity in equilibrium for each specie is:

NH₃(g): 2.0mol - 2x = 1.0mol/1L = 1M → X = 0.5mol

N₂(g): X = 0.5mol/1L = 0.5M

H₂(g): 3X = 1.5mol/1L = 1.5M

Replacing:

k = [0.5] [1.5]³ / [1]²

<em>k = 1.69M</em>

<em></em>

I hope it helps!

8 0
3 years ago
Consider the reaction.
Alekssandra [29.7K]

Answer:The correct answer is option C.

Explanation:

N_2(g)+3H_2(g)\rightarrow 2NH_3(g)

At STP, 1 mol of gas occupies 22.4 L of volume

So, 100.0 L volume of NH_3will be occupied by :

\frac{1}{22.4 L}\times 100.0 L=4.4642 moles

According to reaction 2 moles NH_3 are obtained from 1 mole of N_2.

Then,4.4642 moles of NH_3 will be obtained from :

\frac{1}{2}\times 4.4642 that is 2.2321 moles of N_2

Mass of N_2 gas:

Moles of N_2 gas  Molar mass of N_2 gas:

2.2321 mol\times 28 g/mol=62.4988\approx 62.50 g

Hence, the correct answer is option C.

4 0
3 years ago
Read 2 more answers
what kind of change occurs when sodium and chlorine combine ? Describe the matter before and after the change
DaniilM [7]
Sodium is a silver-colored metal which is soft enough to cut with a knife. It is an extremely reactive metal, and is always found naturally in ionic compounds, not in its pure metallic form. Pure sodium metal reacts violently (and sometimes explosively) with water, producing sodium hydroxide, hydrogen gas, and heat:


Chlorine is a poisonous, yellow-green gas, with a very sharp odor, a

Chemical change happen cuz these 2 elements will combine to form a new compound which’s NaCl ( table salt )
5 0
4 years ago
Help pls I will give brainliest!
yKpoI14uk [10]

Answer:

The answer is D, I would type it out but it is to long and I'm kind of lazy, but anyways! Your answer is D

Hope This Helps!

7 0
3 years ago
SOME ONE HELP I FORGOT PIC!!! 20 POINTS AND BRAINLIEST!!!
stiks02 [169]

spindle fibers

i think the next is two nuclei and still together but that stage is not anaphase. Anaphase is when the sister chromatids are pulled apart

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the current scientific thinking about the formation of the solar system?
    7·2 answers
  • A chemist test new mixtures for paint samples and decides one mixtuees stickiness makes is worthless
    8·1 answer
  • Which chemical symbols will complete the equation for this decomposition reaction
    8·1 answer
  • What is the density of an object whose mass is 142.5 g and whose volume is 7.5 mL?
    5·2 answers
  • An experiment is carried out where 13.9 g of solid NaOH is dissolved in 250.0 g of water in a coffee-cup calorimeter. Dissolutio
    12·1 answer
  • How many dots are drawn in a Lewis dot structure for elements in group 2 of the periodic table?
    12·1 answer
  • What is the volume (ML) of water
    7·1 answer
  • During combustion reaction of propane (C3H8) the amount of CO2 gas was 10 grams. Calculate the mass of burnt propane, oxygen and
    14·1 answer
  • Which layer is the oldest layer?<br><br><br> PLEASE ANSWER
    10·1 answer
  • What is the concentration of acetic acid if three 65.0 mL samples of actic acid were neutralized with 16.8 mL, 18.2 mL, and 17.3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!