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
sveticcg [70]
3 years ago
9

Calculate the percent composition by mass of iron in Fe(NO3)3

Chemistry
1 answer:
Dovator [93]3 years ago
6 0

Answer:

It's 23.14 percent

Explanation:

First, the mass of all the elements are:

N = 14

O = 16

Fe = 56

In this molecule you have 3 atoms of N, and 9 atoms of O, so:

3•14 = 42

16•9 = 144

The whole mass of the molecule is:

56 + 42 + 144 = 242

242/100 = 2.42, so 1% is 2.42

56/2.42 = 23.14%

You might be interested in
One __________ of a substance contains the same number of molecules/atoms as in 12 grams of carbon 12
mash [69]

Answer:

"mole"

Explanation:

That is the definition of mole. Mole is a unit for the measurement of how much there is of something. In other words, in SI, 1 mol of a substance contains the same number of molecules/atoms as in 12 grams of carbon 12.

(Approximately 6.28 × 10^23 --> Avogadro's constant)

For further explanation, check out Wikipedia's article here:

https://en.m.wikipedia.org/wiki/Mole_(unit)

4 0
3 years ago
Read the information about the three atoms given in the table. Which of them are isotopes of each other
lara [203]
I think that the answer could be A. X and Y 
5 0
3 years ago
Janice mixed an orange solution of sodium sulfide with a clear solution of hydrochloric acid. She noticed after a minute that th
ycow [4]
A. Hydrochlori acid must smell like rotten eggs
5 0
3 years ago
Does stirring a liquid make it cool down faster?
Talja [164]

Answer:

Stirring will help cool a hot drink because it speeds up the process of convection by bringing the hottest liquid at the bottom to the top

Explanation:

3 0
3 years ago
Read 2 more answers
How many significant figures are in the measurement 603.040 g?
hichkok12 [17]
6.
hope this helps!!!
3 0
3 years ago
Other questions:
  • A human zygote has 46 chromosomes. This number of chromosomes represents what in a human cell?
    7·1 answer
  • Please can u help me .
    9·2 answers
  • Which best represents a reaction mechanism?
    5·2 answers
  • Water is always subject to the law of
    7·1 answer
  • What is it called when a rock is rusting
    8·1 answer
  • Which statement defines activation energy?​
    14·2 answers
  • (b) The mass of a single molybdenum atom is 1.59×10-22 g. Suppose enough Mo atoms were lined up like beads on a string to span a
    7·1 answer
  • Gasoline is a hydrogen and carbon compound. It is mixed with air in the carburetor of a car. What conditions within the carburet
    15·1 answer
  • You will write 2-3 paragraphs about how you think the earth was formed
    6·2 answers
  • Is bleach liquid starch? <br> Yes or No
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!