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
miss Akunina [59]
3 years ago
14

The theory of evolution states

Chemistry
1 answer:
dmitriy555 [2]3 years ago
8 0

Answer:

the theory of evolution states that all living things which exist today, and many more that are now extinct, evolved from simple life forms which first developed 3 billion years ago.

Explanation:

You might be interested in
liquid water has the density of 1000.0kg/m^3. Calculate the volume occupied by 0.250kg of liquid water.
WITCHER [35]

Answer:

V=2.5x10^{-4}m^3\\\\V=0.25L

Explanation:

Hello,

In this case, since the density is defined as the degree of compactness a substance has and is mathematically defined as:

\rho =\frac{m}{V}

Thus, for this problem, as we know both the density and mass of water we can compute the volume as shown below:  

V=\frac{m}{\rho}=\frac{0.250kg}{1000.0kg/m^3}\\  \\V=2.5x10^{-4}m^3\\\\V=0.25L

Best regards.

5 0
3 years ago
I have no idea what I'm doing in chemistry please help.
Tresset [83]
Your just answering the questions..? lol
5 0
3 years ago
Which pair of atoms have the most polar bond
Nikolay [14]

H-Cl pair of atoms has the most polar bond.

7 0
3 years ago
Which of the following is an example of commensalism?
Juliette [100K]

Commensalism is the relation ship between two species where one of the species is being benefited while the other is not benefited and not even harmed.

It is a type of symbiosis

the correct answer is

A) Birds feed off the insects that are stirred up from the grasses as cattle move through.


8 0
4 years ago
A 0.020 M solution of niacin has a pH of 3.26. (a) What percentage of the acid is ionized in this solution
mariarad [96]

Answer: 2.75%

Explanation:

pH=-log [H+]

3.26 = -log [H+]

[H+] = 5.495\times 10^{-4} M

HA\rightleftharpoons H^++A^-

initial      0.020     0           0

eqm        0.020 -x    x      x

K_a=\frac{[H+][A-]}{[HA]}

K_a=\frac{[x][x]}{[0.020-x]}

x=5.495\times 10^{-4}

K_a=\frac{[5.495\times 10^{-4}]^2}{[0.020-5.495\times 10^{-4}]}

K_a =1.553\times 10^{-5}

percent dissociation = \frac{[H^+_eqm]}{[Acid_{initial}]}\times 100

percent dissociation=\frac{5.495\times 10^{-4}}{0.020}\times 100

Thus percent dissociation= 2.75 %

5 0
3 years ago
Other questions:
  • If a disease killed all the mice in a food web how would that effect owls
    13·2 answers
  • Find the pH of a solution prepared by taking a 50.0 mL aliquot of a solution prepared by dissolving 12.25g of NaOH and 250.0 mL
    6·1 answer
  • Which series of labels correctly identifies the indicated structures in this sketch of a cell viewed under a microscope? A.mitoc
    8·2 answers
  • How does H3PO4 ionize in water
    7·1 answer
  • I need help pls help me I give brainless
    8·1 answer
  • What elements would likely form an ionic bond?
    11·1 answer
  • Is diphenylamine a solid, liquid, or a gas at room temperature
    12·1 answer
  • If a notebook has a mass of 50 grams, a length of 12 cm, a width of 5 cm and a height of 1cm, what is the volume of the notebook
    13·1 answer
  • Which statement best describes how a compound is different from an element?
    7·1 answer
  • Q2 Different metals were discovered at different times throughout history. In general,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!