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Rufina [12.5K]
3 years ago
9

| What material does Not Melt At any temperature?

Chemistry
1 answer:
jenyasd209 [6]3 years ago
4 0
Is there supposed to be multiple choice answers
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Which option is an example of a chemical property?
Delvig [45]
Yes, the correct answer is b
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3 years ago
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1. Suppose you had 58.44 grams of NaCl and you dissolved it in exactly 2.00 L of solution.
Margarita [4]
.500M or .500 mol/liters
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2 years ago
Which reason best explains why metals are ductile instead of brittle?
MaRussiya [10]

Answer: -

Metals are ductile instead of brittle because they have flexible bonds.

Explanation: -

Metals have a property called ductility.

It is the ability of a metal to be drawn into wires.

Metals due to greater bond flexibility are more ductile.

The most ductile metal known to man is Gold. Metallic wires find many applications in modern machinery particularly.

Usually ductility and malleability go together.

7 0
3 years ago
PLEASE HELP ASAP!!! LOTS OF POINTS^^
Serggg [28]
1. An isomers, are molecules with<u> the same chemical formula</u> but <u>different structural formula.</u>

2. <span>Isomers of hexane are <u>skeletal isomers</u>. They have the same chemical formula (C</span>₆H₁₄)<span> but have different carbon chain and different chemical properties.
</span>There are five isomers of hexane.


Look at the attachment :)


5 0
3 years ago
The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol. How much energy is produced by burning 0.8210 g
bazaltina [42]

The energy produced by burning : -32.92 kJ

<h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)

The enthalpy and heat(energy) can be formulated :

\tt \Delta H=\dfrac{Q}{n}\rightarrow n=mol

The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol.

The energy released for 0.8210 g of naphthalene :

\tt Q=\Delta H\times n\\\\Q=-5139.6~kJ/mol\times \dfrac{0.8210~g}{128.17~g/mol}~\\\\Q=-32.92~kJ

3 0
3 years ago
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