How many valence electrons does a carbon atom have?

Answers

Answer 1
Answer: carbon has 4 valence electrons 
Answer 2
Answer: a carbon atom has 4 valence electrons 

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Which ranks the solutions from the strongest to weakest acid

Answers

if its 12, 10, and 8, then the answer is Z, X, Y

CH2CL2< CH3OH (H- bonds) <KCl (ionic)

What two ideas from geology were important to Darwin's thinking

Answers

the geologists that influenced Darwin's thinking with their work were Lyell and Hutton , together both are saying that the earth is millions of years old whereas people back then used to think that according to the bible earth was just about 6000 years old if you track the generations or the genealogies. of course not every single generation is noted on the bible. also the discovery of fossils suggests evolution,
in addition people used to think that earth hasn't changed neither its life since the moment of creation
in short, the ideas were that earth natural processes operate very slowly, thus the earth must be millions of years old. that made Darwin wonder "if the earth is very old and changing, would life change as well over time? also he realized that life evolvells with such a great amount of time

What do all organisms need? Select three options.

Answers

Answer:

food water a place to live

Explanation:

food, water, and protection. A plant is left in a protected greenhouse that pumps in fresh carbon dioxide. The plant also has access to sunlight and can make its own sugar. However, the plant is beginning to die.

Answer:

what are the options?

Explanation:

Plants in the division anthophyta appeared during the ___________________. a. Paleocene
b. Cretaceous
c.Triassic
d. Jurassic

Answers

The answer is A paleocene
The correct answer is c. Triassic. They diversified during the lower Cretaceous period.

Adenosine triphosphate, or ATP, is primarily used as _______ in living organisms.

Answers

ATP is primarily used as a source of energy

a source of energy

Your Welcome! :D

Indicate whether the following are acidic, basic, or neutral solutionH3O+ = 10^-7

pH = 2

H3O+ = 10^-10

pH = 9

H3O+ = 10^-1

Answers

neutral
acidic
acidic
basic
basic

neutral, acidic, acidic, basic, basic