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2 years ago

4. Why does the metallic character of the alkaline earth metals increase as you go down the

1 answer:

4 0

As you proceed down the periodic table, the metallic character becomes stronger. This is because as the atomic radius increases, there is less attraction between the nucleus and the valence electrons due to the greater distance between them, making electrons simpler to shed.

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Write the chemical equation for the following reaction The elements sodium and chlorine combine to yield the compound sodium chl

Shkiper50 [21]

Answer:Na2S04 + HCl gives

NaCl + H2So4

Explanation:

Displacement reaction

8 0

4 years ago

Iron (III) oxide is formed when Iron combines with oxygen in the air. How many grams of Fe₂O₃ are formed when 16.7 grams of reac

sladkih [1.3K]

Answer:

23.9g of Fe₂O₃ are produced

Explanation:

Are formed when 16.7g of Fe reacts completely...

Based on the reaction:

4Fe + O₃ → 2Fe₂O₃

4 moles of Iron react per 1 mole of O₃ producing 2 moles of Fe₂O₃.

To solve this question we need to convert the mass of iron to moles. The ratio of reaction is 2:1 -That is, 2 moles of Fe produce 1 mole of Fe₂O₃-. Thus, we can find the moles of Fe₂O₃ produced and its mass:

Moles Fe -Molar mass: 55.845g/mol-:

16.7g Fe * (1mol / 55.845g) = 0.299 moles of Fe

Moles Fe₂O₃:

0.299 moles Fe * (2 mol Fe₂O₃ / 4 mol Fe) = 0.150 moles Fe₂O₃

Mass Fe₂O₃ -Molar mass 159.69g/mol-:

0.150 moles Fe₂O₃ * (159.69g / mol) =

<h3>23.9g of Fe₂O₃ are produced</h3>

7 0

3 years ago

Haber was able to manufacture large amounts of ammonia, what do plants convert ammonia into?

suter [353]

Answer:

Nitrates.

Explanation:

They convert ammonia to nitrates.

3 0

3 years ago

How many moles of calcium chloride are theoretically produced for the following reaction given we have 2.6 moles of HCl and 1.4

Georgia [21]

Answer : The number of moles of calcium chloride theoretically produced are, 1.3 moles.

Explanation : Given,

Moles of HCl = 2.6 moles

Moles of $Ca(OH)_2$ = 1.4 moles

Now we have to calculate the limiting and excess reagent.

The given balanced chemical reaction is:

$2HCl+Ca(OH)_2\rightarrow 2H_2O+CaCl_2$

From the balanced reaction we conclude that

As, 2 mole of $HCl$ react with 1 mole of $Ca(OH)_2$

So, 2.6 moles of $HCl$ react with $\frac{2.6}{2}=1.3$ moles of $Ca(OH)_2$

From this we conclude that, $Ca(OH)_2$ is an excess reagent because the given moles are greater than the required moles and $HCl$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $CaCl_2$

From the reaction, we conclude that

As, 2 mole of $HCl$ react to give 1 mole of $CaCl_2$

So, 2.6 moles of $HCl$ react to give $\frac{2.6}{2}=1.3$ moles of $CaCl_2$

Therefore, the number of moles of calcium chloride theoretically produced are, 1.3 moles.

7 0

4 years ago

What is an intramolecular force? Answer: A force acting between the atoms within a molecule

klemol [59]

Answer:

no tengo la menor idea de que es

7 0

3 years ago