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CaHeK987 [17]
3 years ago
12

Intermolecular forces allow which of the following substances to be the least fluid?

Chemistry
2 answers:
Nataly_w [17]3 years ago
4 0
The correct option is calcite. It is a carbonate mineral of calcium carbonate. Its quite a hard mineral and it not fluid in nature at all. It exhibits both ionic and covalent chemical bonds.
slava [35]3 years ago
3 0
Out of the options, glass is the least fluid. The proof of this also lies in the fact that glass is the most difficult to melt out of all of the mentioned substances, and melting point gives us a rough estimate of the strength of intermolecular forces.
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3 years ago
How much heat is absorbed/released when 20.00 g of NH3(g) reacts in the presence of excess O2 (g) to produce NO (g) and H2O (l)
FrozenT [24]

Answer:

a. 342.9 kJ of heat are absorbed.

Explanation:

Calculation of the moles of NH_3 as:-

Mass = 20.00 g

Molar mass of NH_3 = 17.031 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{20.00\ g}{17.031\ g/mol}

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Given that:- \Delta H=+1168\ kJ

It means that 1 mole of NH_3 undergoes reaction and absorbs 1168\ kJ of heat

So,

1168 mole of NH_3 undergoes reaction and absorbs 1168\times 1168\ kJ of heat

<u>Amount of heat absorbed = + 342.9 KJ</u>

7 0
3 years ago
When NH3(aq) is added to Cu2 (aq), a precipitate initially forms. Its formula is:
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7 0
3 years ago
Read 2 more answers
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