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tester [92]
3 years ago
7

Elements or compounds that can only be separated or combined to make substances with new properties by means of a chemical react

ion.
Biology
1 answer:
ankoles [38]3 years ago
5 0

Answer:

substance

Explanation:

hello hope this helps

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Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest Of all sub
Art [367]

arbon, as with many elements, can arrange its atoms into several different geometries, or "allotropes." In pure diamond, every carbon atom is covalently bonded to exactly 4 other carbon atoms in a very specific and energetically favorable geometry. The diamond cannot be broken or scratched unless many covalent bonds are broken, which is difficult to do. In another common allotrope, graphite, every carbon atom is covalently bonded to only 3 other carbon atoms, and the atoms are arranged in sheets that are not covalently bonded to each other. The sheets can be broken apart easily, ultimately meaning that graphite can be easily scratched. Coal is composed of particles of different allotropes of carbon, and some "amorphous carbon," which has no defined geometry in its atomic structure. Without a continuous network of covalent bonds, coal is easily scratched (i.e. it is not hard).



8 0
3 years ago
Name two biotic and abiotic factors you might find in a forest ecosystem
erica [24]
Biotic:
-predator
-competition(relationsip)

abiotic:
-sunlight
-water
3 0
3 years ago
All information of atoms pls!? (atoms,molecules,elements,compounds,etc...) 20 pts
Mrac [35]
I think atoms are made up of three parts
8 0
3 years ago
What were the Himalayan Mountains formed by?
horrorfan [7]
I might be wrong but i think is C 

7 0
3 years ago
Read 2 more answers
There are two alleles, B and b, at a gene locus in a population at Hardy-Weinberg equilibrium. The relative frequency of the dom
viva [34]

Answer:

210

Explanation:

Frequency of dominant allele is represented by "p"

and frequency of recessive allele is represented by "q"

Given

p = 0.7

Thus,

q = 1-p\\q = 1 - 0.7 \\q = 0.3\\

As per Hardy Weinberg's second equation of equilibrium -

p^2 + q^ 2 + 2pq = 1\\

Substituting the given values in above equation, we get -

0.7^ 2+ 0.3^2 + 2pq = 1\\2pq = 1- 0.49-0.09\\2pq = 0.42

So the total number of heterozygous individual is equal to

0.42 * 500\\= 210

8 0
4 years ago
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