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3 years ago

Please help will mark Brainly

Chemistry

1 answer:

Murljashka [212]3 years ago

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C: tt

Remember, individuals must have two alleles for a gene, so someone could be homozygous dominant (EE), homozygous recessive (ee), or heterozygous (Ee). In this example, the recessive trait is having attached earlobes and is only seen in someone with the genotype ee (homozygous recessive)

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Which statement explains which component is likely to be more powerful in explaining a scientific phenomenon? Component Q, becau

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Answer:

Component P, because being supported by ample evidence is a characteristic of a theory.

Explanation:

Hypothesis do not explain phenomenon they are just educated guesses that can be put into work to see if they are true of false.

Scientific theory on other hand, is widely accepted and supported by large amount of evidence and useful for explaining scientific phenomenon.

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3 years ago

Polllination refers to the ___________

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Explanation:

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the act of transferring pollen grains from the male anther of a flower to the female stigma

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Students were asked to describe evidence of Plate Tectonic Theory. Their answers are listed

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One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents, suggesting that the continents were once joined.

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3 years ago

What are the properties of the reactants?

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Reactants starts the chemical reaction and gives right to the product either by thermal decomposition or in the presence of a catalyst.

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Reactants and products contain the same atoms, but they are rearranged during the reaction, so reactants and products are different substances.

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The natural distribution of the isotopes of a hypothetical element is 60.795% at a mass of 281.99481 u, 22.122% at a mass of 283

fenix001 [56]

Answer: The average atomic mass of the element is 283.291 amu

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

For isotope 1:

Mass of isotope 1 = 281.99481 amu

Percentage abundance of isotope 1 = 60.795 %

Fractional abundance of isotope 1 = 0.60795

For isotope 2:

Mass of isotope 2 = 283.99570 amu

Percentage abundance of isotope 2 = 22.122 %

Fractional abundance of isotope 2 = 0.22122

For isotope 3:

Mass of isotope 3 = 286.99423 amu

Percentage abundance of isotope 3 = [100 - (60.795 + 22.122)] = 17.083 %

Fractional abundance of isotope 1 = 0.17083

Putting values in equation 1, we get:

$\text{Average atomic mass of element}=[(281.99481\times 0.60795)+(283.99570\times 0.22122)+(286.99423\times 0.17083)]\\\\\text{Average atomic mass of element}=283.291amu$

Hence, the average atomic mass of the element is 283.291 amu

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4 years ago