Select the correct answer.
carbon burns in the presence of oxygen to give carbon dioxide. which chemical equation describes this reaction?
a. carbon + oxygen + carbon dioxide
b.
carbon + oxygen - carbon dioxide
oc
carbo
carbon dioxide - carbon + oxygen
d.
carbon dioxide + carbon - oxygen
reset
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When carbon burns in the presence of oxygen to give carbon dioxide the correct chemical equation which describe this reaction is carbon + oxygen - carbon dioxide.

Hence the correct answer to the above question is option b.

Explanation:

Carbon dioxide is of gaseous state. The formula which represent carbon dioxide is  CO2. The carbon dioxide is formed when an element which has carbon in it burns in the “presence of oxygen”.

The black gas released while burning this is known as carbon dioxide. Carbon dioxide is very helpful for the plant for the process of photosynthesis for preparing their food in the presence of sunlight and water.

answer; the above answer to the above statement is (true)

we solve the problem using the hardy-wineberg equation.

let us start with the homozygous recessive proportion of individuals with sickle cell anaemia,

we have the proportion as q² = 0.25.

∴ q = 0.5 (frequency of hbs in population)

further,

solving for the frequency of normal cell by using the fact that,

p + q = 1

∴ p = 1 - 0.5 = 1 - 0.5 = 0.5

now we can calculate 2pq in p² + 2pq + q², which is the frequency for heterozygous carriers of sickle cell anaemia,

∴ 2pq = 2 x 0.5 x 0.5 = 0.5

and the homozygous normal cell individuals proportion is given by the expression,

∴ p² = 0.5² = 0.25

hence, the carriers for sickle cell anaemia are in proportion, 0.5, or 50%.