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devlian [24]
3 years ago
8

Are ions of alkali metals larger or smaller than ions of alkaline earth metals from the same period

Chemistry
1 answer:
PtichkaEL [24]3 years ago
7 0
Because size of an atom INCREASES from top to bottom and DECREASES from left to right on the periodic table. If to elements are in the same period they can't increase in size based on the up or down trend. Instead, notice that Alkali Metals are LEFT of Alkaline Earth Metals. Therefore, the Alkali Metal will be larger than the Alkaline Earth Metals.
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Lead has a density of 11.3 g/mL. If you have 105 grams of lead,
Elza [17]

Answer:

<h2>Volume = 9.29 mL</h2>

Explanation:

Density of a substance can be found by using the formula

Density( \rho) =  \frac{mass}{volume}

From the question

Density = 11.3 g/mL

mass = 105 g

Substitute the values into the above formula and solve for the volume

That's

11.3 =  \frac{105}{v}

Cross multiply

11.3v = 105

Divide both sides by 11.3

v =  \frac{105}{11.3}

v = 9.29203

We have the final answer as

<h3>Volume = 9.29 mL</h3>

Hope this helps you

6 0
3 years ago
In a solution, the solvent is...
Marina CMI [18]

Answer:

The solvent is the substance that dissolves solutes.

Explanation:

Solutes are the ones being dissolved. Examples could be sugar, salt, etc.

Solvents are the dissolver. Examples could be acids like HCl or water.

7 0
3 years ago
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Na + Cl --&gt; NaCl
dalvyx [7]

Answer:

38.152 g NaCl would be produced.

Explanation:

\frac{(23 + 35.5) \times 15}{23}  \\  = 38.152 \:  \: g

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In a reaction, chlorine accepts an electron to form Cl-. What is true about the atomic size of the chlorine ion?
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Covalent radii of chlorine atom (Cl) is 0.099 nm and ionic radii of chlorine anion (Cl⁻) is 0.181 nm.

Difference between an chlorine atom and chlorine anion is the number of electrons that surround the nucleus.

Chlorine atom has 17 electrons and chlorine anion has 18 electrons.

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3 years ago
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Name a common greenhouse gas with only hydrogen and oxygen
AVprozaik [17]
I'm guessing water vapour. i can't think of any other gas limited to only hydrogen and oxygen

hope it helps :)
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2 years ago
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