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3 years ago

What are the sign and magnitude of the charge of atom containing 14 protons, 15 neutrons, and 12 electrons?

1 answer:

7 0

We know that protons gives positive charge, neutrons no charge and electrons negative, then +14 - 12 = +2 So the charge of the atom is sign positive and magnitude 2

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A bar graph of boiling point of milk and water

kap26 [50]

Answer:

The boiling point of milk is close to the boiling point of water, which is 100 degrees C, or 212 degrees F at sea level, but milk contains additional molecules, so its boiling point is slightly higher.

Explanation:

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2 years ago

Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is called a(n):

earnstyle [38]

Answer:

Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is called a natural law- D.

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2 years ago

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-- A scientist combines 14 grams of potassium nitrate with an unknown amount of

igor_vitrenko [27]

Answer:

The unknown amount of potassium chloride is 13.6 grams.

Explanation:

The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.

The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:

$m_{r} = m_{p}$

Where r is for reactants and p is for products

$m_{KNO_{3}} + m_{KCl} = m_{p}$

$14 g + m_{KCl} = 27.6 g$

$m_{KCl} = 27.6 g - 14 g = 13.6 g$

Therefore, the unknown amount of potassium chloride is 13.6 grams.

I hope it helps you!

5 0

2 years ago

Predict the formula for a compound made from X3 and Y3–.

PolarNik [594]

Well, a compound has a total charge of 0. So, it's electrically neutral. Since the X is 3+ and the Y is 3- they add to 0. Meaning no subscripts are necessary. Why don't you try a different combo?

Like:

A^3 and B^1-, to get a 3- charge you need 3xB^1- so the formula is AB3

Does this help?

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3 years ago

Read 2 more answers

True or false. A bond between a metal atom and a nonmetal atom is likely an iconic bond

vlada-n [284]

It is true...obviously

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3 years ago