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abruzzese [7]
4 years ago
15

Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Na ?

Biology
1 answer:
saw5 [17]4 years ago
5 0
I had to draw a sodium atom so if i remember correctly there are 11 electrons, 11 protons, and 12 neutrons. Cx Hope I helped.
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Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal because
FinnZ [79.3K]

Answer:

C. Law.

Explanation:

A law is a type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal because it has always been observed to be true.

Some examples of laws that are universally accepted include;

I. Law of Conservation of Momentum: it states that if objects exert forces only on each other, their total momentum is conserved.

II. Law of Conservation of Energy: it states that energy cannot be destroyed but can only be transformed or converted from one form to another.

III. Newton's First Law of Motion: also known as law of inertia, it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.

IV. Ohm's law: it states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

V. The three (3) laws published by Kepler include;

a. The first law of planetary motion by Kepler states that, all the planets move in elliptical orbits around the Sun at a focus.

b. According to Kepler's second law of planetary motion, the speed of a planet is greatest when it is closest to the Sun.

Thus, the nearer (closer) a planet is to the Sun, the stronger would be the gravitational pull of the sun on the planet and consequently, the faster is the speed of the planet in terms motion.

c. The square of any planetary body's orbital period (P) is directly proportional to the cube of its orbit's semi-major axis.

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3 years ago
Why do the cells of the digestive system secrete proteolytic enzymes, such as pepsin, in their inactive forms
Kipish [7]

Answer:

In the initial stages of digestion of food, the stomach performs an essential role. Apart from doing churning and squeezing the food bolus, it also discharges an amalgamation of compounds, together called gastric juice. It comprises mucus, water, pepsin, HCl, and intrinsic factor. Of these five constituents, the principal enzyme that takes part in the digestion of protein is pepsin.

It dissociates proteins into amino acids and smaller peptides, which can easily get captivated within the small intestine. This pepsin is released in its sedentary form, or zymogen form called pepsinogen by the chief cells present within the gastric lining. It is released in its sedentary form by the stomach, by this the stomach inhibits the auto-digestion of defensive proteins in the digestive tract's lining.

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Endocrine Gland is the right answer.
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