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
What is the quantum number set of the ground-state electron that is found in lithium (Li) but not in helium (He)?
statuscvo [17]
The electron configuration of lithium atom is: Li:[He]2s^1

The number "2" is the value of the principal quantum number "n". Letter "s" is associated with the value of secondary quantum number "l" and it is equal to zero. The value of "m" (or magnetic quantum number) is zero too. The quantum number set for the highest energy electron will be (2, 0, 0, 1/2).
3 0
3 years ago
What is an oxidation reaction? ​
kow [346]
<h3>Definition:</h3>
  • A reaction when an atom or compound loses one or more electrons.

  • It is a reaction is a type of chemical reaction that involves a transfer of electrons between two species.

  • Oxidation is gain of oxygen

<h3>For Example:</h3>

Fe + O2 —(H2O)—> Fe2O3

7 0
3 years ago
What is the total number of Joules of heat absorbed by 65.0 grams of water when the temperature of the water is raised from 25°C
Norma-Jean [14]

Answer:

Total number of heat absorbed is 4.08kJ

Explanation:

Explanation is contained in the picture attached

5 0
3 years ago
In a chemical reaction, the products are
Blizzard [7]

whatever u r mixing together will indicated what the reaction or the product will be

6 0
3 years ago
Read 2 more answers
You probably already know the names of some molecules. Identify which compound (water, salt, carbon dioxide, or methane) corresp
vladimir1956 [14]

CO2 is carbon

H2O is water

CH4 is methane

NaCI is salt

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the density of 19.2 g of oak that has a volume of 25.7 cm3?
    11·1 answer
  • The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, Cl-35 and Cl
    10·1 answer
  • "what is the empirical formula for a compound that is 2.46% h, 39.07% s, and 58.47% o?"
    15·1 answer
  • ) Hydrogen gas is highly combustible, and leakage can lead to a catastrophic explosion. The concentration of hydrogen gas in the
    6·1 answer
  • Why does increasing the concentration of reactants increase the reaction rate? A. Some of the reactants are likely to act as cat
    7·1 answer
  • What property of matter best describes the way a typical alcohol thermometer works?
    7·1 answer
  • In 2011, a computer named Watson competed against two humans on a popular television quiz show and won. Watson listened to each
    8·1 answer
  • What is the elevation of Point B?<br> A. 800 ft<br> B. 900 ft<br> C. 850 ft<br> D. 1000 ft
    13·1 answer
  • The corn crop in an area is prone to infestation by larvae from moths that feed on the cornstalks and ears of corn. The techniqu
    7·2 answers
  • What is the mass in grams of 2.5 mol of O2?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!