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
antoniya [11.8K]
3 years ago
9

Which of the following is an aldehyde?

Chemistry
1 answer:
balu736 [363]3 years ago
5 0

Answer:  CH_3CH_2CH_2CHO has aldehyde functional group.

Explanation:

Functional groups are specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

A.  CH_3CH_2CH_2COCH_3 has ketone C=O functional group .

B.  CH_3CH_2CH_2COOH has carboxylic acid COOH functional group .

C.  CH_3CH_2CH_2CHO has  aldehyde H-C=O functional group .

D. CH_3CH_2CH_2COOCH_3 has ester RO-C=O functional group .

Thus CH_3CH_2CH_2CHO has aldehyde (CHO) group.

You might be interested in
Ethanol (c2h5oh) melts at -114°c. the enthalpy of fusion is 5.02 kj/mol. the specific heats of solid and liquid ethanol are 0.9
Nimfa-mama [501]

Answer: 4.18925 kJ heat is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50°C.

Explanation:

Temperature of Solid C_2H_5OH=-135^oC=138 K(0^oC=273K)

Melting temperature of Solid C_2H_5OH=114^oC=159 K

Temperature of liquid C_2H_5OH=-50^oC=223K

Specific heats of solid  ethanol = 0.97 J/gK

Specific heats of liquid ethanol = 2.3 J/gK

Heat required to melt the the 25 g solid C_2H_5OH at 159 K

\Delta T_1 = 159 K - 138 K = 21 K

Q_1=mc\Delta T= 25\times 0.97J/gK\times 21 K=509.25 J

Heat required to melt and raise the temperature of C_2H_5OH upto 223 K

\Delta T_2 = 223 K - 159 K  = 64 K

Q_2=mc\Delta T= 25\times 2.3J/gK\times 64 K=3680 J

Total heat to convert solid ethanol to liquid ethanol at given temperature :

Q_1+Q_2=509.25 J+3680 J=4189.25 J=4.18925 kJ (1kJ=1000J)

Hence, 4.18925 kJ of heat will be required to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50°C.

6 0
3 years ago
HELP ME THE WHOLE PAGE !!!! Someone help please
Deffense [45]

Answer:

In the image below

Explanation:

Hope this helps you :)

7 0
2 years ago
A newly discovered element, Z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267
kirill115 [55]
Ok so, remember that t<span>he average atomic mass is what is seen on the periodic table. It is the average mass of all of the isotopes with their frequency taken into account. What you need to do is add the products of the masses and frequencies Just like this:</span>

<span>0.903*267.8 + 0.097*270.9
When you add it the result is what you are looking for</span>
4 0
3 years ago
1. The process by which water molecules in liquid water escape into the air as water vapor is called​
seropon [69]

Answer:

water helps u a lot

Explanation:

water vaper is gas that rises up into the air

3 0
2 years ago
Sodium combines with water to produce sodium hydroxide and hydrogen gas. Which word equation represents this violent reaction?
zzz [600]
A coupleword to describe the action could be, Berserk, destructive, furious, unrestrained, impetuous, intemperate and uncontrollable
5 0
2 years ago
Other questions:
  • Is the unlimited source of energy for all living things is the leaf. Is that true or false
    14·1 answer
  • What do you call relative amounts of different sizes of mineral particles in a soil
    12·1 answer
  • The molar mass of the compound was found to be 30.069 g/mol. what is the molecular formula? express your answer as a chemical fo
    10·1 answer
  • What is an ionic compound? How is electrical neutrality maintained in an ionic compound?
    12·1 answer
  • PLATOFAM HELP!!!!
    15·2 answers
  • What is the atomic number of pt-175 after it undergoes alpha decay
    8·1 answer
  • The voltage in a flashlight bulb is 6.0 volts and has a resistance of 24 ohms. Calculate the current
    8·2 answers
  • 6. Below is a table comparing atoms of different elements. Write your
    5·1 answer
  • In the decomposition of water, why is twice as much hydrogen as oxygen formed?(1 point)
    15·1 answer
  • Explain how a metal and a non-metal form an ION when they chemically react together.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!