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
inysia [295]
2 years ago
12

A brown dye has a percent composition of 62.41% C, 5.24% H, and 32.36% N by mass with a molar mass of 346.40 g/mol. Determine th

e molecular formula of the dye
Chemistry
1 answer:
Fiesta28 [93]2 years ago
8 0

The molecular formula : C₁₈H₁₈N₈

<h3>Further explanation</h3>

Given

62.41% C, 5.24% H, and 32.36% N

Required

The molecular formula

Solution

mol ratio

C : 62.41/12.0096 = 5.1967

H : 5.24/1.00784 = 5.1992

N : 32.36/14.0067 = 2.310

Divide by 2.310(smallest)

C : 5.1967/2.31=2.25

H : 5.1992/2.31 = 2.25

N : 2.31/2.31 = 1

Multiplied by 4

C : H : N = 9 : 9 : 4

The empirical formula : C₉H₉N₄

(C₉H₉N₄)n=346.40 g/mol

(12.0096 x 9 + 1.00784 x 9 + 14.0067 x 4)n=346.4

(108.0864+9.07056+56.0268)n=346.4

(173.184)n=346.4

n=2

<em>The molecular formula : C₁₈H₁₈N₈</em>

You might be interested in
What does the word giraffe comes from
olga55 [171]
The word giraffe comes from italian
6 0
2 years ago
In another experiment, if 80 xo3 molecules react with 104 brz3 molecules how many br2 molecules will be produced which reactant
BaLLatris [955]

This is an incomplete question, here is a complete question.

The balanced chemical reaction is:

6XO_3+8BrZ_3\rightarrow 6XZ_4+4Br_2+9O_2

In another experiment, if 80 XO_3 molecules react with 104 BrZ_3 molecules. How many Br_2 molecules will be produced which reactant will be used up in the reaction.

Answer : The number of molecules of Br_2  will be, 52 molecules and BrZ_3 reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.

Explanation :

The balanced chemical reaction is:

6XO_3+8BrZ_3\rightarrow 6XZ_4+4Br_2+9O_2

First we have to determine the limiting reagent.

From the balanced reaction we conclude that,

As, 8 molecules of BrZ_3 react with 6 molecule of XO_3

So, 104 molecules of BrZ_3 react with \frac{104}{8}\times 6=78 molecule of XO_3

From this we conclude that, XO_3 is an excess reagent because the given moles are greater than the required moles and BrZ_3 is a limiting reagent and it limits the formation of product.

Now we have to calculate the molecules of Br_2

From the reaction, we conclude that

As, 8 molecules of BrZ_3 react to give 4 molecules of Br_2

So, 104 molecules of BrZ_3 react to give \frac{104}{8}\times 4=52 molecules of Br_2

Hence, the number of molecules of Br_2  will be, 52 molecules and BrZ_3 reactant will be used up in the reaction because it is a limiting reagent and it limits the formation of product.

4 0
3 years ago
The ___________ energy in a mechanical system is determined by adding the potential and kinetic energy together
Anna35 [415]
I think its 

<span>The Mechanical energy in a mechanical system is determined by adding the potential and kinetic energy together. </span>

6 0
3 years ago
Read 2 more answers
2. A chemical analysis of a sample provides the following elemental data:
Vadim26 [7]

Answer:

C3 H6 O2

Explanation:

first divide their mass by their respective molar mass, we get:

30.4 moles of C

61.2 moles of H

20.25 moles of O

now divide everyone by the smallest one of them then we get

C= 1.5

H= 3

O= 1

since our answer of C is not near to any whole number so we will multiply all of them by 2

so,

C3 H6 O2 is our answer

3 0
1 year ago
nguyên tử sắt có điện tích hạt nhân là 26+. trong nguyên tử, số hạt mang điện nhiều hơn số hạt không mang điện là 22. Hãy xác đị
dimaraw [331]

Answer:

I don't know yr language

8 0
3 years ago
Other questions:
  • How are the valence electrons organized to form a bond between the atoms
    14·1 answer
  • Name the 1 isomer of c7h16 that contains an ethyl branch on the parent chain.
    5·1 answer
  • What is the oxidation number for s in s2o4?
    7·1 answer
  • A 8 g object displaces 50 mL of water. What is its specific gravity?
    9·2 answers
  • The tsunami walls at Miyako were high enough to hold back the water.<br> True<br> False
    10·1 answer
  • What is the effect of a gas'<br> on its volume?
    15·2 answers
  • At STP, 32 grams of O2 would occupy the same volume as:
    6·1 answer
  • How many moles of O2 are produced in the decomposition of 24 g of water in the
    11·1 answer
  • Write a balanced chemical equation for the standard formation reaction of gaseous nitrogen monoxide (NO). Please help me
    8·1 answer
  • How would different ratios of fuel and oxygen affect the altitude the rocket reaches?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!