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Zina [86]
3 years ago
8

which are structures of the excretory system? check all that apply. kidney, spleen, bladder, esophagus, ureter, urethra

Biology
2 answers:
AysviL [449]3 years ago
7 0

Answer:

Kidney, Bladder, Ureter, Urethra.

Rashid [163]3 years ago
3 0

The right answer is kidney, bladder, ureter, urethra.

The urinary tract is the device that allows the evacuation of catabolism products from the human body in a liquid form, the urine, and thus ensures the purification of blood and the maintenance of homeostasis within the body. organization. Also, it maintains the blood balance, the volume and the chemical composition of the blood. To do this it eliminates, among other things, the surpluses of certain minerals, called electrolytes, and returns to the blood the substances that are useful for the proper functioning of the organism (reabsorption).

Every day, a human being produces 800 to 2,000 milliliters of urine. The urinary tract is included in the excretory system (as the large intestine and the lungs).

This apparatus is a succession of retro- and subperitoneal organs: the two kidneys, the two ureters, the bladder and the urethra.

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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.
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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

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