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
tiny-mole [99]
3 years ago
5

Give the mass percent of carbon in C14H19NO2?

Chemistry
2 answers:
Pachacha [2.7K]3 years ago
7 0
72.0726 is the percent for carbon
denpristay [2]3 years ago
4 0

Answer:

The mass percent of carbon in C₁₄H₁₉NO₂ is 72.1%.

Explanation:

To calculate the mass percent of carbon in C₁₄H₁₉NO₂ we have to follow two simple steps:

1st) Look for the <u>atomic weight of each element</u> in the Periodic Table and then <u>multiply each one by its subscript</u> in the molecule and finally <u>sum all</u> of them to find the molar weight of the molecule:

  • Carbon atomic weight . Carbon subscript = 12 . 14 = 168g
  • Hydrogen atomic weight . Hydrogen subscript = 1 . 19 = 19g
  • Nitrogen atomic weight . Nitrogen subscript = 14 . 1 = 14g
  • Oxygen atomic weight . Oxygen subscript = 16 . 2 = 32g

The molar weight of C₁₄H₁₉NO₂ is: 168g + 19g + 14g +32g = 233g.

2nd) Find the mass percent of carbon with a <u>Rule of three</u>:

If 233g represents the 100% of mass, the 168g of carbon in the molecule will represents the 72.1% of mass.

The Rule of three is:

233g ------------- 100%

168g ------------- = (168 . 100)/233 = 72.1% mass of carbon.

You might be interested in
Light waves travel much__________________________________ than sound waves.
LUCKY_DIMON [66]

Yeah, a lot faster than sound.

3 0
3 years ago
What mass of calcium carbonate (in grams) can be dissolved by 4.0 g of hcl? (hint: begin by writing a balanced equation for the
stiks02 [169]
The reaction between calcium carbonate and hydrochloric acid can be expressed through the chemical reaction,

    CaCO3 + 2HCl --> CaCl2 + H2O + CO2

The molecular weight of calcium carbonate is 100 g/mol while that of hydrochloric acid is 36.45. The equation above depicts that 100 g of calcium carbonate can be dissolved in 72.9 g of hydrochloric acid. 

    x = (4 g HCl)(100 g CaCO3 / 72.9 HCl)
      x = 5.49 g

Answer: 5.49 g
8 0
3 years ago
Read 2 more answers
Chemistry chemistry chemistry chemistry chemistry chemistry
fgiga [73]

Explanation:

.chemistry

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

8 0
3 years ago
Read 2 more answers
Unlike the nervous system, the endocrine system ___ A) Responds quickly B) Does not respond C) Rarely responds D) Responds Slowl
valentina_108 [34]
D) Responds slowly 


Good luck. It responds slower them the nervous system 
3 0
3 years ago
a rock dropped in a graduated cylinder raises the level of water from 20 ml to 35 ml. the rock has mass of 45 g. what is the den
adelina 88 [10]

Answer:

15...

Explanation:

6 0
2 years ago
Other questions:
  • A balloon is filled with helium at sea level. The volume was measured to be 3.1 liters at a pressure of 0.97 atmosphere. If the
    7·2 answers
  • A 0.7834 g sample of a primary standard KHP was titrated with 38.45 mL of NaOH solution to a phenolphthalein end-point. What is
    8·1 answer
  • What causes pressure inside a tire
    8·1 answer
  • how do modern tools such as Doppler radar satellite weather balloons and computers help meteorologist understand weather
    11·1 answer
  • Convert 14 kilograms to pounds
    10·2 answers
  • Which property of water helps islands have temperate weather throughout the year?<br><br> (1 point)
    6·1 answer
  • What's the formula for bisonium dingodie chemical
    6·1 answer
  • “True or False”
    7·1 answer
  • There is a very slight change in gravity at the top of a mountain. Which property would most likely be less at the top of a moun
    8·1 answer
  • The number of electrons in 1.6 gram CH, is:​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!