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Tcecarenko [31]
3 years ago
5

Explain, in terms of electrons, why the radius of a potassium atom is larger than the radius of the potassium ion in the ground

state.
Chemistry
1 answer:
Evgesh-ka [11]3 years ago
5 0
Because the potassium atom has 19 electrons and there is four layers of electrons as 2, 8, 8, 1. And for potassium ion, there is 18 electrons. It has there layers of electrons as 2, 8, 8. So the radius of potassium atom is larger than potassium ion.
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If you had a beaker full of black powder which of the following could you have?
Evgesh-ka [11]
A beaker of black powder can be a mixture with different substances (i.e gunpowder: a mixture of sulfur, charcoal, etc.), an element which can probably be carbon (known as black), and a compound as well which can be potassium nitrate. Hence, the answer is D. 
8 0
3 years ago
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Ethanol (c2h5oh) melts at -114°c. the enthalpy of fusion is 5.02 kj/mol. the specific heats of solid and liquid ethanol are 0.9
maria [59]
You'll want to add three amounts of heat. 

(1) Specific heat of lowering the temperature from -135°C to the melting point -114°C
(2) Latent heat of fusion/melting
(3) Specific heat of elevating the temperature from -114°C to -50°C

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<em>Summing up all energies, the answer is 6.913 kJ.</em>
7 0
3 years ago
How many protons does one atom of sulfur have
mrs_skeptik [129]

Answer:

16

Explanation:

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6 0
3 years ago
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What is the molar mass of sulfur trioxide?
tatyana61 [14]

Answer:

80.07 g/mol

Explanation:

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Anybody know the answer to this
eduard

An atom's mass is determined by its protons and neutrons.

An atom's charge is determined by its number of protons minus it number of electrons.

Atoms become cations, or positively charged when they lose an electron, and since electrons have a negative charge, they become anions, or negatively charged.

Water is a universal solvent.

Carbohydrates (carbs) are used by the body for energy.

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8 0
2 years ago
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