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Ostrovityanka [42]
3 years ago
15

K forms the compound K2O , which is an ionic compound that is brittle. Identify another element, M , that is likely to form a br

ittle, ionic compound with the formula M2O . Justify your answer in terms of periodic trends.
Chemistry
1 answer:
meriva3 years ago
4 0

The metal is sodium, Na.

<u>Explanation:</u>

K₂O is an ionic compound in which K is in the oxidation state of +1 and it belongs to group 1.

Group 1 elements also form oxides with the metals with the general formula M₂O and M being Na, K, Li and so on.

Metals Like sodium and Potassium are so brittle in nature and also their oxides.

So the other metal that form metal oxide which is brittle as well as ionic in nature, and so the metal oxide is Na₂O.

So the metal is sodium, Na.  

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Answer:

27.56 moles

Explanation:

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The density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 g/ml. calculate the mass of 16.9 ml
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Hey there!:

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3 years ago
Label B-L in the diagram below
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Answer:

B. Polar Easterlies

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3 years ago
Brandon is traveling in France. He weighs himself at a health club because he is concerned that he has eaten too many croissants
anastassius [24]

<u>Answer:</u>

<u>For a:</u> Yes, he has gained weight.

<u>For b:</u> The number of onions required is 1.

<u>Explanation:</u>

  • <u>For a:</u>

We are given:

Weight of Brandon checked earlier = 183 lb

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1 kg = 2.205 lb

So, 183lb\times \frac{1kg}{2.205lb}=83kg

And, weight of Brandon measured at the health club = 85.0 kg

As, the weight at the health club is more than the previous measured weight. So, Brandon has gained weight.

  • <u>For b:</u>

We are given:

Amount of diced onions a recipe calls = 125 g

Mass of 1 onion = 4 oz

Converting the mass of 1 onion to ounces, we use the conversion factor:

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\text{Number of onions}=\frac{\text{Mass of onion a recipe calls}}{\text{Mass of 1 onion}}

\text{Number of onions}=\frac{125g}{113.4g}=1.1\approx 1

Hence, the number of onions required is 1.

6 0
3 years ago
Acid rain is an example of _____________ weathering
olga nikolaevna [1]

Answer:

Chemical weathering

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6 0
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