3.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 46. g/mol, is burnedcompletely in excess oxygen, and the mass of the products carefully measured:productmasscarbon dioxide6.70 gwater4.11 gUse this information to find the molecular formula of X.do00CheckExplanationTerms of UsePrivacyO 2019 McGraw-Hill Education All Rights Reserved11:52 PM12/5/201999+O Type here to searchpoendhomeinsprt scdelete12f9faf6f513 *f2nume backspacelockesc&823421{O PhomeLO%24

Question
Asked Dec 6, 2019
14 views
3.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 46. g/mol, is burned
completely in excess oxygen, and the mass of the products carefully measured:
product
mass
carbon dioxide
6.70 g
water
4.11 g
Use this information to find the molecular formula of X.
do
00
Check
Explanation
Terms of Use
Privacy
O 2019 McGraw-Hill Education All Rights Reserved
11:52 PM
12/5/2019
99+
O Type here to search
po
end
home
ins
prt sc
delete
12
f9
fa
f6
f5
13 *
f2
num
e backspace
lock
esc
&
8
23
4
2
1
{
O P
home
LO
%24
help_outline

Image Transcriptionclose

3.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 46. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 6.70 g water 4.11 g Use this information to find the molecular formula of X. do 00 Check Explanation Terms of Use Privacy O 2019 McGraw-Hill Education All Rights Reserved 11:52 PM 12/5/2019 99+ O Type here to search po end home ins prt sc delete 12 f9 fa f6 f5 13 * f2 num e backspace lock esc & 8 23 4 2 1 { O P home LO %24

fullscreen
check_circle

Expert Answer

star
star
star
star
star
1 Rating
Step 1

The empirical formula is the chemical formula of any compound that represents the proportions of each elements that is present in the given compound. It does not show the actual number of element as well as cannot give any information about arrangement of atoms in the formula of compound.

Step 2

Combustion analysis yields:

Mass of sample = 3.50 g

Mass of CO2 = 6.70 g

Mass of H2O = 4.11 g

Calculate moles of C and H with O:

help_outline

Image Transcriptionclose

1 mole 12.011 g C = 6.70 g × 0.1522moles 44.0098 g 12.011 g 1 mole 2.0158 g H = 4.11 g x 0.456moles 18.0152 g 1.0079 g

fullscreen
Step 3

Calculate the mass an...

help_outline

Image Transcriptionclose

O = Mass of sample - ( mass of C + mass of H) O = 3.50 g - ( 1.828 + 0.4599) O = 1.212 g 1.212 g 0= =0.0757moles 16.00

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Other

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: I dont get this

A: Given,Mass of NH3 = 61.1 gMass of O2 = 61.1 gMoles of NH3 and O2 can be calculated as:

question_answer

Q: CS Classify this structure. OH 0 C CH-C- NH2 -C Н2 с- H2 Н2 C C H2 NH2 protein dipeptide Opolypeptid...

A: Triglycerides are synthesized from glycerol and fatty acids whose general structure is given below.

question_answer

Q: ter 18 em 18.18 Part A What coenzyme picks up hydrogen when a carbon-oxygen double bond is formed? E...

A: One of the redox reactions happening in the cell is when lactate is oxidised to form pyruvate and re...

question_answer

Q: The density of air at STP is 1.2754 g/L. If your "250 mL" flask held 272 mL of water (also the volum...

A:  GivenVolume of air in the flask = 272mLDensity of air = 1.2754g/L

question_answer

Q: m.ecollege.oom/course.htmicourselde 154322748HepiD=2b3e43e6520 d55915384a5aZ76#10001 Search. Sh. Tri...

A: Click to see the answer

question_answer

Q: Show the bonding of polypropylene (polypropene)

A: Monomers combine together to form polymers.  Monomers are the repeating units of small molecules whi...

question_answer

Q: 50.0 mL 0.50 M propanoic acid with 25.0 mL of 1.25 M NaOH.  Determine if it yields a buffer. If not,...

A: A buffer solution is chemical solution which resists change to its pH or acidity. It is a solution i...

question_answer

Q: Gaseous methane  CH4  reacts with gaseous oxygen gas  O2  to produce gaseous carbon dioxide  CO...

A: The balanced chemical reaction between methane and oxygen is shown below.

question_answer

Q: The atomic radius of metal X is 1.30×102 picometers (pm) and a crystal of metal X has a unit cell th...

A: Given,Atomic radius of metal = 1.30*102picometers.Atomic weight = 42.3g/mol.One mole of element cont...