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
Leona [35]
3 years ago
13

A compound is found to contain 7.523% phosphorus and 92.48% iodine by weight. what is the empirical formula for this compound?

Chemistry
2 answers:
BaLLatris [955]3 years ago
7 0

Answer:

PI₃

Explanation:

The empirical formula is found using the molar ratio between phosphorus and iodine.

The phosphorus composes 7.523% by weight of the substance, or 7.523g of phosphorus per gram of the substance. The moles of phosphorus per gram of substance is calculated using the atomic weight of phosphorus (30.97 g/mol):

(7.523g P) / (1 g substance) x (mol/30.97g P) = (0.2429 mol P) / (1 g substance)

Similarly, the moles of iodine (atomic weight 126.90 g/mol) per gram of substance is found:

(92.48 g I) / (1 g substance) x (mol/126.90 g I) = (0.7288 mol I) / (1 g substance)

The molar ratio between P and I is found by dividing the two values calculated above:

(0.7288 mol I) / (1 g substance) ÷ (0.2429 mol P) / (1 g substance) = (3.00 mol I) / (mol P)

Thus, the ratio of iodine to phosphorus is 3:1, so the empirical formula (the simplest formula) is PI₃

RUDIKE [14]3 years ago
5 0
The answer is PI3
Ratio of 1:3
You might be interested in
Heat _____.
makvit [3.9K]
A:Is a measure of energy
7 0
3 years ago
Read 2 more answers
4O POINTS PLEASE ANSWER
Karo-lina-s [1.5K]

Answer & Explanation:

The reason why is because global fossil fuel consumption is on the rise, and new reserves are becoming harder to find. Those that are discovered are significantly smaller than the ones that have been found in the past.

Oil: Consumption (Predictions): Over 11 Billion tonnes Annually. If we carry on as we are, our known oil deposits could run out in just over 53 years.

Gas (Predictions): If we increase gas production to fill the energy gap left by oil, our known gas reserves only give us just 52 years left.

Coal: Although it’s often claimed that we have enough coal to last hundreds of years, this doesn’t take into account the need for increased production if we run out of oil and gas, our known coal deposits could be gone in 150 years.

For example, oil reserves are a good example: 16 of the 20 largest oil fields in the world have reached peak level production – they’re simply too small to keep up with global demand.

During the year of 2015, fossil fuels made up 81.5% of total U.S. energy consumption. The number is most likely increasing every year.

(fyi: the graph provided is showing future energy reserves for coal, gas and oil. approxiamately.)

7 0
3 years ago
4
matrenka [14]

Answer:

Yes.

Explanation:

Yes, this difference of readings will definitely affect the results of the experiment as well as the E values because the readings taken by both students are different from one another. There is a fault in one of the thermometer because both shows different readings of temperature of the same solution. This will affect the overall experiment and due to this error, we are unable to tell that which one reading is correct so the answer is uncertain or unsure.

5 0
2 years ago
Write an equation and solve the problem.
VMariaS [17]
Dexter already has 4 and he gets 38 so 4+38=42. Than 42/6=7. 7 plates on each table.
4 0
2 years ago
Which objects in space formed from the huge disk of ice and debris beyond the outer planets?
olga_2 [115]
Comets are usually formed of ice and other suave debris, while asteroids typically contain metals.
3 0
3 years ago
Read 2 more answers
Other questions:
  • A solution of Na2CO3 is added dropwise to a solution that contains 1.12×10−2 M Fe2+ and 1.45×10−2 M Cd2+. What concentration of
    10·1 answer
  • Which of the following values best classifies a bond between 2 atoms as being ionic?
    12·2 answers
  • For 520.0 ml of a buffer solution that is 0.175 m in hc2h3o2 and 0.165 m in nac2h3o2, calculate the initial ph and the final ph
    10·1 answer
  • Which one of this is endothermic and which one is exothermic?
    6·1 answer
  • A skier is skiing down a slope on the mountain. Is the mechanical energy conserved? Why or why not?
    14·2 answers
  • Don’t mind my cats fur :)
    5·1 answer
  • The brain combines the electrical signals sent from the what? I NEED THIS ASAP PLEASE!!
    12·1 answer
  • How do i know if a reaction is exo/endothermic?? help please.
    12·1 answer
  • If 79.5 mol of an ideal gas is at 8.91 atm at 47.20 °C, what is the volume of the gas?
    8·1 answer
  • How many grams of calcium hydroxide is produced from 9.4 g of calcium chloride in this balanced
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!