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3 years ago

What is an atomic nucleus

Chemistry

2 answers:

kakasveta [241]3 years ago

5 0

Answer:

The atomic nucleus is the small, dense region consisting of protons and net at the center of an atom.

Explanation:

The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. ... Protons and neutrons are bound together to form a nucleus by the nuclear force.

bearhunter [10]3 years ago

5 0

Answer:

The atomic nucleus is the small , dense region consisting of protons and neutrons at the center of an atom .

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To reduce the amount of CO2 that escapes from a bottle of carbonated beverage when you open the cap, you should

notka56 [123]

Answer:

Explanation:

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4 years ago

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Amiraneli [1.4K]

Answer:

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4 years ago

Which solution has the lowest freezing point?

Leokris [45]

Correct Answer: Option 3 i.e. 30 g of KI dissolved in 100 g of water.

Reason:
Depression in freezing point is a colligative property and it is directly proportional to molality of solution.

Molality of solution is mathematically expressed as,
Molality = $\frac{\text{Number of moles}}{\text{Weight of solvent (Kg)}}$ 

In case of option 1 and 2, molality of solution is 0.602 m. For option 3, molality of solution is 1.807 m, while in case of option 4, molality of solution is 1.205 m.

Thus, second solution (option 2) has highest concentration (in terms of molality). Hence, it will have lowest freezing point

3 0

4 years ago

Read 2 more answers

Sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of +1. Why?

Lena [83]

It has to be noted that sodium is an element which belongs in the first column of the periodic table. This means that it has a valence electron of 1 which further means that it is capable of donating one of its electron to another element during reaction. This is exactly the explanation as to why it becomes charged +1 after the reaction.

5 0

3 years ago

Read 2 more answers

Aspirin was formed to reduce the irritation of salicylic acid. However, aspirin can still disturb the stomach. Which functional

nataly862011 [7]

Answer:

Carboxylic acid

Explanation:

Asprin is a drug that contains the carboxylic acid functional group (R-COOH), ester functional group (R-O-CO-R') and the aromatic group (benzene ring).

When we take in aspirin, it becomes salicylic acid. This metabolite irreversibly inhibits the enzyme cyclooxygenase. Hence the the production of protective prostaglandins is blocked causing inflammation and pain.

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3 years ago