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
abruzzese [7]
3 years ago
5

A way of classifying organisms that uses all the evidence known about organisms is called a?

Chemistry
1 answer:
Molodets [167]3 years ago
3 0

Answer:

Taxonomy or taxanomic group

You might be interested in
3. The exosphere is the outer layer of the
barxatty [35]

Answer:

D. exosphere is the outer layer of the thermosphere

3 0
3 years ago
What is the electronegativity difference for a bond between potassium and iodine? A. 3.3 B. 4.6 C. 0.4 D. 1.7
user100 [1]
Iodine has an electronegativity of 2.5, and potassium has an electronegativity of 0.8, so the difference is:
2.5 - 0.8 = 1.7
7 0
3 years ago
Read 2 more answers
Which of the following are strongly hydrogen bonded in the liquid phase? A) nitrilesB) esters C) secondary amides D) acid chlori
-Dominant- [34]

Answer: Option (C) is the correct answer.

Explanation:

Chemical formula of a secondary amide is R'-CONH-R, where R and R' can be same of different alkyl or aryl groups. Here, the hydrogen atom of amide is attached to more electronegative oxygen atom of the C=O group.

Therefore, the hydrogen atom will be more strongly held by the electronegative oxygen atom. As a result, there will be  strongly hydrogen bonded in the liquid phase of secondary amide.

Whereas chemical formula of nitriles is RCN, ester is RCOOR' and acid chlorides are RCOCl. As no hydrogen bonding occurs in any of these compounds because hydrogen atom is not being attached to an electronegative atom.

Thus, we can conclude that secondary amides are strongly hydrogen bonded in the liquid phase.

6 0
4 years ago
I REALLY NEED HELP ITS DUE AT 11:59 PM
Slav-nsk [51]

Answer:

I attached a photo of balanced equations but thats as much as I can help.

Explanation:

5 0
3 years ago
Read 2 more answers
The standard free energy of activation of one reaction A is 95.00 kJ mol–1 (22.71 kcal mol–1). The standard free energy of activ
diamong [38]

Answer:

The answer to the questions are as follows

Reaction B is 4426.28 times faster than reaction A

(b) Reaction B is faster.

Explanation:

To solve the question we are meant to compare both reactions to see which one is faster

The values of the given activation energies are as follows

For A

Ea = 95.00 kJ mol–1 (22.71 kcal mol–1) and

for  B

Ea = 74.20 kJ mol–1 (17.73 kcal mol–1)

T is the same for both reactions and is equal to 298 k

Concentration of both reaction = 1M

The Arrhenius Law is given by

k = Ae^{\frac{-E_{a} }{RT} }

Where

k = rate constant

Ea = activation energy

R = universal gas constant

T = temperature  (Kelvin )

A = Arrhenius factor

Therefore

For reaction A, the rate constant k₁ is given by k₁ = Ae^{\frac{-95000}{(8.314)(298)} }

And for B the rate constant k₂ is given by k₂ = Ae^{\frac{-74200 }{(8.314)(298)} }

k₁ = A×2.225×10⁻¹⁷

k₂ = A×9.850×10⁻¹⁴

As seen from the above Reaction B is faster than reaction A by (A×9.850×10⁻¹⁴)/(A×2.225×10⁻¹⁷) or 4426.28 times

3 0
3 years ago
Other questions:
  • A concrete pile from a waterfront pier was pulled from the harbor water at port hueneme california. It's dimensions we're 14in x
    8·1 answer
  • Calculate the number of grams of HNO3 which must be added to 31.5 g of H20 to prepare a 0.950 m solution.
    15·1 answer
  • Help me out please this is hard​
    9·2 answers
  • How many grams of H2O is 4.5 x 10 15 molecules? *
    6·1 answer
  • Someone help please I don’t know the answer to the question I meeed help
    5·1 answer
  • A compound decomposes by a first-order process. If 37 % of the compound decomposes in 60 minutes, the half-life of the compound
    14·1 answer
  • How does the air on a hot day compare with the air on a cold day?
    10·1 answer
  • Which of these changes to a modern lifestyle would promote the
    10·1 answer
  • At the atomic level, are synthetic medicines different from natural medicines? Explain your answer.
    6·2 answers
  • Can anyone help me with these please?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!