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3 years ago

15

The radii of the sodium and potassium ions are 102 pm and 138 pm, respectively. which compound has stronger ionic at- tractions,

sodium chloride or potassium chloride?

1 answer:

V125BC [204]3 years ago

6 0

<em>Answer:</em>

The NaCl has more attraction as compare to KCl.

<em>Explanation:</em>

As we know down the group size is increases.
As the size of K is greater than Sodium.
Due to greater size of atom, the distance between the K and Cl is greater than NaCl .
Due to greater distance between the atoms , attraction become less.

<em>Summary:</em>

Greater size (greater radius) between atoms , lesser will be attraction.

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marshall27 [118]

Answer:

60.9 Kelvin

Explanation: First, write out everything that you know. You are tring to find the temperature, so the temperature will be represented by x.

Pressure (P)= 4.5 atm

Volume (V)= 3L

Number of Moles (n)= ?

Gas Consant (R)= 0.0821, if the pressure is in atm, that means r is 0.0821

Temperature (T)= x

We don't have all the information we need to plug the values into the equation. We still need to know how many moles 55.0 grans of neon is.

Ne in Grams= 55

Atomic Mass of Ne= 20.1797

55/20.1797= 2.7

moles= 2.7

Now that we have all the information we need, plug everying into the equation. In case you don't know, the Ideal Gas Law Equation is PV= nRT.

(4.5)(3) = (2.7)(0.821)x

x= 60.9

Now you have your temperature! It is 60.9 in Kelvin.

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3 years ago

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Kruka [31]

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2 years ago

Emily wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stop

Andru [333]

Answer:

independent variable -- different batteries

dependent variable -- the time that clock stop

Explanation:

In an experiment or a research study, there are two type of variables that can affect the result of the experiment or the conclusion. They are independent variable and the dependent variable.

An independent variable may be defined as that variable in an experiment which can be changed or can be controlled in the scientific experiment in order to test the effect on the dependent variable. It cannot be changed by other variables.

On the other hand, dependent variable are those are those which can be altered or change that can affect the experiment.

In the context, Emily uses the different types of the batteries as an independent variable and the time where the clock stopped in the dependent variable in her research.

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4 years ago

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Vikentia [17]

Eye

Explanation:

Vitreous humor is found in the human eye and other animals.

It is a gel that fills the space between the lens and retina of the eye. This matter helps to keep the shape of the eye in place by maintaining a constant pressure in the eye.

It is typically made up of water, gelatinous and transparent.

Learn more:

Human eye brainly.com/question/8032392

Color in the eye brainly.com/question/9434044

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3 years ago

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defon

Answer:

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Explanation:

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