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Lelechka [254]
3 years ago
8

Which material does not melt at any temperature? wood, a mixture of different substances ethanol, a molecular compound sodium ch

loride, an ionic compound iron, a metallic element description?
Chemistry
1 answer:
Paladinen [302]3 years ago
3 0
The material, which does not melt at any temperature is WOOD.
Wood is made up of many substances including lignin, water, cellulose and other organic materials. When wood is heated, it normally oxidizes in the presence of oxygen before it has the chance to melt. The physical structure of the wood is typically destroyed during this process and the original material can not be obtain again.This irreversible breakdown of wood makes it impossible for wood to melt. <span />
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Valence number of a metallic element X is 3. What is the formula of its oxide?​
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Answer:

the formula of its oxide is X2O3.

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3 years ago
For the following reaction,
jeka94

Answer:

The answer to your question is:

1.- CO

2.- 0.414 moles of CO2

Explanation:

Data

                               2CO   + O2      ⇒    2CO2

CO = 0.414 moles

O2 = 0.418

 

Process

theoretical ratio   CO/O2 = 2/1 = 1

experimental ratio  CO/O2 = 0.414/0.418 = 0.99

Then the limiting reactant is CO

2.-

                    2 moles of CO ---------------  2 moles of CO2

                    0.414 moles of CO ---------  x

                   x = (0.414 x 2) / 2

                   x = 0.414 moles of CO2

                   

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Why is cell division a<br> necessary function of living things?
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What is the molar mass of Ba3(PO4)2?
Yakvenalex [24]

Answer:

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