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3 years ago

13. Fe + Cu(NO3)2 -> Fe(NO3)2 + Cu Is what type of reaction

Chemistry

1 answer:

Dmitrij [34]3 years ago

5 0

Answer:

this would be an oxidation-reduction reaction

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The molecular weight of a gas that has a density of 5.75 g/l at stp is __________ g/mol.

Ira Lisetskai [31]

Answer : The molecular weight of a gas is, 128.9 g/mole

Explanation : Given,

Density of a gas = 5.75 g/L

First we have to calculate the moles of gas.

At STP,

As, 22.4 liter volume of gas present in 1 mole of gas

So, 1 liter volume of gas present in $\frac{1}{22.4}=0.0446$ mole of gas

Now we have to calculate the molecular weight of a gas.

Formula used :

$\text{Moles of gas}=\frac{\text{Mass of a gas}}{\text{Molecular weight of a gas}}$

Now put all the given values in this formula, we get the molecular weight of a gas.

$0.0446mole=\frac{5.75g}{\text{Molecular weight of a gas}}$

$\text{Molecular weight of a gas}=128.9g/mole$

Therefore, the molecular weight of a gas is, 128.9 g/mole

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3 years ago

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¿Qué es un orbital s, un orbital p, un orbital d, un orbital f y cómo se representa cada uno?

irina1246 [14]

Answer:

Cada uno de esos orbitals sons los differentes grupos en la tabla periodica.

Explanation:

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3 years ago

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0.820 L has a mass of 2.56kg what is the density of this liquid in kg/L

3241004551 [841]

Density ρ= $\frac{m}{v}$

= $\frac{2.56 kg}{0.820 L} \\=3.121kg/L$

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3 years ago

Life as we know it could not exist without water. All the chemical reactions of life occur in an aqueous solution. Water molecul

dusya [7]

A) At 0 C water forms ice but as mentioned above F) water's greatest density occurs at 4 C and it decreases below 4 C so ice is lighter than 4C water, thus, at 0C ice comes to surface and acts as insulator thereby preventing lower water from freezing.

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2 years ago

Which of the following represents a chemical change?

maw [93]

That Answer would be...

C. Fireworks exploding

because this is a chemicals change the creates the fireworks.

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3 years ago

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