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3 years ago

Which factor is generally responsible for high melting points?

1 answer:

5 0

High melting points have to do with excessive amounts of heat provided on frozen surfaces. Even pollution creates high melting points because the ice isnt use to the chemicals provided in pollution.

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How many moles of Ag will be produced from 46.0 g of Cu, assuming AgNO3 is available in excess?

Xelga [282]

Answer:

1.44 mol

Explanation:

Given data:

Mass of Cu = 46 g

Moles of Ag produced = ?

Solution:

Chemical equation:

Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂

Number of moles of Cu:

Number of moles = mass/ molar mass

Number of moles = 46 g/63.546 g/mol

Number of moles = 0.72 mol

Now we will compare the moles of Cu and silver from balance chemical equation:

Cu : Ag

1 : 2

0.72 : 2×0.72 = 1.44 mol

Thus from 46 g of Cu 1.44 moles of Ag is produced .

4 0

3 years ago

Coordination number of Nacl structure is ?

GenaCL600 [577]

Answer:

Six

The coordination number of sodium is 6. Likewise, six sodium ions immediately surround each chloride ions, making the coordination number of chloride also equal to 6. Because the formula unit of sodium chloride displays a 1:1 ratio between the ions, the coordination numbers must be the same.

4 0

2 years ago

Read 2 more answers

True or False of the three states of matter, molecules in solids have the greatest

Grace [21]

False. gases have to greatest freedom of motion

6 0

3 years ago

Read 2 more answers

The second reaction in the formation of sulfuric acid occurs slowly.

rjkz [21]

<u>Answer:</u> The correct option is $NO_2(g)$

<u>Explanation:</u>

A catalyst is defined as the chemical species that increases the reaction rate but does not participate in it and is left behind after the completion.

A homogeneous catalyst is one that is present in the same phase as the reactants and products.

A heterogeneous catalyst is one that is present in different phase as that of reactants and products.

For the given chemical reaction:

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

As all the reactants and products are in gaseous state so, the homogeneous catalyst must also be in the gaseous state only.

Hence, the correct option is $NO_2(g)$

5 0

2 years ago

Select the correct answer.

sladkih [1.3K]

C not sure 100 percent but my best guess

7 0

3 years ago