Which best describes the relative positions of protons, neutrons, and electrons in an atom?

1 answer:

6 0

Hello!

The center of an atom is called the nucleus; it is comprised of protons and neutrons, collectively known as nucleons. The electrons float around the nucleus in a cloud.

Answer:
A) Protons and neutrons are in the center of the atom, and electrons move around in the cloud.

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Every conversion factor is a ratio that is equal to 1 less than 1 greater than 1

miss Akunina [59]

equal to 1

Explanation:

All conversion factors used in any calculation is usually a ratio that is equal to 1. This is because when 1 is used to multiply or divide any number, the number stays the same.

Conversion factors are useful in making the simplification of an expression very simple. They are usually ratios of 1.
It follows that a conversion factor is a number that when multiplied or divided by itself will stay the same.

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How many protons (p) and neutrons (n) are in an atom of sr? 38 p, 90 n 90 p, 38 n 38 p, 52 n 52 p, 38 n?

harina [27]

Sr will always have 38 protons because that is its atomic number. Normally Sr has 38 protons and 49 neutrons yielding an atomic mass of 87. unless you are dealing with an isotope of Strontium in which 3 additional neutrons would give you the 53 neutrons in your answer, (38p, 52n).

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4 years ago

What is the engine piston displacement in liters of an engine who’s displacement is listed as 430 in.²

sergeinik [125]

For an engine whose displacement is listed as 430 in.², the engine piston displacement in liters is mathematically given as

PD= 7.37 L

<h3>What is the engine piston displacement in liters of an engine whose displacement is listed as 430 in.²?</h3>

Generally, the equation for the dimensional analysis method,\, we convert in to L is mathematically given as

l*(v/l)*l/v

Therefore, piston displacement

PD=(450 in3) . (1 dm3 / 61.024 in3) . (1 L / 1 dm3)

PD= 7.37 L

In conclusion, piston displacement

PD= 7.37 L

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Why does surface area of a reactant influence the rate of the reaction?

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because it can influence how frequently and sufficiently the particles collide depending on the space it has to do so, for example a large surface area would be have a slower rate of reaction and a lower temperature. (the rate of reaction in terms of concentration, it is diffused from high to low)

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nasty-shy [4]

Answer:

sugar is the solute and water is the solvent

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