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2 years ago

What would be the expected radius of a nucleus having 82 protons and 125 neutrons?

Chemistry

1 answer:

Luba_88 [7]2 years ago

7 0

The expected radius of a nucleus having 82 protons and 125 neutrons would be 5.2 fm.

<h3>What is a nucleus in the atom?</h3>

The nuclei are incredibly tiny and dense. They are 10 thousand times smaller than an atom and have more than 99.9% of their mass. Protons, which have a positive charge, and neutrons, which have no electrical charge, make up the nucleus. Alternately, protons and neutrons make up an atom's nucleus. While neutrons have no charge but weigh the same as protons, protons have a positive charge that is equivalent to the orbiting electrons. Based on the 1909 Geiger-Marsden gold foil experiment, Ernest Rutherford identified the atomic nucleus in 1911, which is the compact, dense region made up of protons and neutrons at the heart of an atom.

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If you have 155 mL solution of a 0.762 M FeCl3 solution, how many

Sedaia [141]

Moles are the product of the molar concentration and the volume of the solution. The moles of Ferric chloride is 0.118 moles.

<h3>What are moles?</h3>

Moles are the smallest unit of the measurement of atoms and molecules. It is calculated by the molar concentration and the volume of the solution.

Given,

Molar concentration of ferric chloride = 0.762 M

Volume of solution = 0.155 L

Moles are calculated as:

$\begin{aligned} \rm Moles &= \rm Molarity \times Volume (L) \\\\&= 0.762 \times 0.155\\\\&= 0.118\;\rm mol\end{aligned}$

Therefore, 0.118 moles of ferric chloride are present in the sample.

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2 years ago

What characteristics define a scientific idea vs a pseudoscientific idea

djyliett [7]

Scientific data-reproducible,reliable results are demanded and experiments must be precisely described while pseudoscience failures are ignored,hidden,no actual physical phenomena or processes ever found

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3 years ago

How much of the protein consumed by humans around the world is fish?

Naily [24]

The answer is option 2, (20 percent)

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3 years ago

What happens when you put an ice-pop outside? This is for the people who don’t know

Aleonysh [2.5K]

Answer:

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Explanation:

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3 years ago

Read 2 more answers

Barium and nitrogen form two binary compounds containing 90.745% and 93.634% barium, respectively. Determine the empirical formu

Leviafan [203]

Answer:

BaN, Ba₃N₂

Explanation:

In order to determine the empirical formula of a compound, we have to follow a series of steps.

Step 1: Determine the percent composition

Step 2: Divide each percentage by the atomic mass of each element

Step 3: Divide all numbers by the smallest one

Step 4: If necessary, multiply by a number so the coefficients are whole

Compound 1

Step 1

Ba: 90.745%

N: 100% - 90.745% = 9.255%

Step 2

Ba: 90.745/137.33 = 0.66078

N: 9.255/14.01 = 0.6606

Step 3

Ba: 0.66078/0.6606 ≈ 1

N: 0.6606/0.6606 = 1

The empirical formula is BaN.

Compound 2

Step 1

Ba: 93.634%

N: 100% - 93.634% = 6.366%

Step 2

Ba: 93.634/137.33 = 0.68182

N: 6.366/14.01 = 0.4544

Step 3

Ba: 0.68182/0.4544 = 1.5

N: 0.4544/0.4544 = 1

Step 4

Ba: 1.5 × 2 = 3

N: 1 × 2 = 2

The empirical formula is Ba₃N₂.

8 0

4 years ago