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3 years ago

Do protons and neutrons attract?

Chemistry

1 answer:

skelet666 [1.2K]3 years ago

7 0

Answer:

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<em>Thus protons repel each other but are attracted to neutrons. What follows is an introduction to the more complete model of nuclear structure. The nucleons (neutrons and protons) of a nucleus, whenever possible, form spin pairs (proton-proton, neutron-neutron and proton-neutron).</em>

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Gold atoms can be identified based on the number of which subatomic particles?

sp2606 [1]

Answer: A

Explanation:

A Gold (Au) atom has 79 protons and 79 electrons. A typical gold atom has 118 neutrons, though there are 18 other radioisotopes discovered so far. 79 is its charge (atomic number), which is both its proton number and electron number

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3 years ago

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Why does an ice cube melt when you hold it in your hand?

Ede4ka [16]

heat is transferred from your hand to the ice cube

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2 years ago

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What is the molality of a solution that contains 1.34 moles of NaCl in 2.47 kg of solvent

dsp73

The molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

<u>Explanation:</u>

Molality is the measure of how much of amount of solute is dissolved in the solvent. So it is calculated as the ratio of moles of solute to the grams of solvent.

$\text {Molality}=\frac{\text {Moles of solute}}{\text {Mass of solvent}}$

As in this case, the solute is NaCl and solvent is unknown. So the moles of solute is given as 1.34 moles and the mass of solvent is given as 2.47 kg.

Hence, $\text { molality }=\frac{1.34}{2.47}= 0.54 \mathrm{M}$

Thus, the molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.

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3 years ago

6. Which example has BOTH ionic and covalent bonds? *

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Answer:

It’s either A or D buttttt probably d

Explanation:

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3 years ago

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Answer:

nitrit,nitrat

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3 years ago