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3 years ago

Ionic crystals are excellent insulators and can hold a large amount of heat before melting or boiling.

1 answer:

7 0

It is a true fact that ionic crystals are excellent insulators and can hold a large amount of heat before melting or boiling. The correct option among the two options that are given in the question is the first option. Salt is a great example of ionic crystals and we know that it takes a huge amount of time to melt or boil.

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Food is cooked faster in pressure cooker. why?

horrorfan [7]

Answer:

Answer below

Explanation:

because the pressure of the pressure cooker compresses it and then it cooks faster

6 0

2 years ago

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In lab you have to prepare 530. 00 ml solution of 0. 125 m copper (ii) oxide. How many grams of solid sodium nitrate must be use

GarryVolchara [31]

The grams of solid copper oxide must be used to prepare a solution of 0.125m concentration is 5.26 g.

According to the definition of molar concentration of a substance dissolved in a solution is defined as the ratio of the number of moles to the volume of the solution.

C = n/V

The number of moles is equal to the given mass divided by the molar mass.

n = m/Mm = n ×m

Given,

The volume of the solution of copper oxide = 0.53

Molar mass of copper oxide = 79.5

Concentration of copper oxide = 0.125

CuO = cVM

= 0.125 × 0.53 × 79.5

= 5.26g

Thus, we concluded that the grams of solid copper oxide must be used to prepare a solution of 0.125m concentration is 5.26 g.

DISCLAIMER: The above question is wrong. The correct question is

Question: In lab you have to prepare 530. 00 ml solution of 0. 125 m copper (ii) oxide. How many grams of solid copper oxide must be used to prepare a solution of this concentration?

learn more about molar concentration :

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3 0

1 year ago

Which number represents the water table? 1 2 3 4

zimovet [89]

Answer:

I think that is number 3

Explanation:

3 0

3 years ago

Read 2 more answers

Please help me with this

Svetradugi [14.3K]

The third one is the correct answer :)

6 0

4 years ago

The bonds S-S, O-H and Ca-Cl are, respectively, a) nonpolar covalent, polar covalent, ionic polar covalent, b)nonpolar covalent,

Brums [2.3K]

Answer:

nonpolar covalent, polar covalent, ionic

Explanation:

From the question ,

S - S Bond -

Both the atom are same , hence , making a non polar bond , because of no difference between the electronegativity of the atom ,

Hence , the S-S Bond is non polar covalent bond .

O-H bond -

The Oxygen atom is more electronegative than the hydrogen atom , so the bond is polar in nature .

And as the bond is formed by sharing ,

Therefore ,

O-H bond is polar covalent bond .

Ca-Cl bond -

Calcium is a metal , whereas , Chlorine is a non - metal , the bond is ionic in nature ,

Hence , Ca-Cl bond is ionic in nature .

7 0

3 years ago