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olga nikolaevna [1]
2 years ago
5

How do animals get nitrogen?

Biology
1 answer:
kompoz [17]2 years ago
4 0

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.

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Calculate the mass defect for oxygen-16 given this data. Round to the 5es001-1.jpg decimal place. mass of an oxygen-16 atom: 15.
Naya [18.7K]

Answer:

Explanation:

Given parameters:

Mass of oxygen atom = 15.994914amu

Mass of a proton = 1.00728amu

Mass of a neutron = 1.00866amu

Unknown:

Mass defect = ?

From the periodic table, the number of the elementary particles in a neutral Oxygen atom is given below:

           Number of protons = 8

           Number of neutrons = 8

          Number of electrons = 8

Solution

The mass defect examines the difference between the actual mass of an atom and sum of masses of the nucleons.

The mass of an atom is concentrated in the nucleus which contains protons and neutrons. Electrons have little to no weight compared with the nucleons.

    To calculate the mass defect, we first know the mass of the nucleons first:

           1 proton has a mass of  1.00728amu

           8 protons will weigh: (8 x 1.00728)amu = 8.05824amu

For the neutrons:

          1 neutron has a mass of 1.00866amu

          8 neutrons will weigh: (8 x 1.00866)amu = 8.06928amu

Mass of the nucleons = mass of protons + mass of neutrons

                                   = 8.05824amu + 8.06928amu

                                   = 16.12752amu

The mass defect = mass of the nucleons - mass of the atom

                             = 16.12752amu - 15.994914amu

                              = 0.132606amu ≅ 0.13261amu to 5 decimal places

6 0
3 years ago
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What role(s) do the antelope play
lina2011 [118]

Answer:

Antelopes play an important role in the ecosystems they are a part of. Like many other species, they help maintain biodiversity, which will ensure sustainability for all organisms in the ecosystem. The natural predators that feed off of antelopes, for example, would lose their source of food.

Explanation:

7 0
3 years ago
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Parent strand of DNA is CCTAGCT. What is the complementary strand?
Dovator [93]

Answer:

GGATCGA

Explanation:

Adenine goes with thymine and Cytosine e goes with guanine.

Basically A is with T; C is with G

5 0
3 years ago
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What does the process of natural selection involve?
LuckyWell [14K]
<span>Preservation of advantageous genetic mutations, I think.</span>
4 0
3 years ago
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Water is composed of one oxygen atom covalently boded to two hydrogen atoms. Select all of the
mafiozo [28]

Answer:

F: The oxygen atom has a greater attraction for the electrons in the surrounding covalent bonds than the

hydrogen atoms.​

Explanation:

Between hydrogen and oxygen atoms exist a covalent bond. Oxygen is more electronegative than hydrogen atom hence its ability to get attracted to itself more electrons than hydrogen.

7 0
3 years ago
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