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3 years ago

Explain why the magnesium can be stretched to form magnesium ribbon...??

Chemistry

1 answer:

insens350 [35]3 years ago

3 0

Answer:

Because of its malleability.

Explanation:

Magnesium is alkaline earth metal.

It is present in second group.

It is shiny gray color metal.

It is lighter but strong.

Its density is 1.738 g/mL.

It is soft and can be malleable. Magnesium ribbons are also formed by stretching the magnesium metal and this is due to the malleability of magnesium.

Magnesium ribbon burns and produces heat.

It is used to make the many light weight products such as many parts of car, phone, laptop, luggage etc.

It is also used to remove the sulfur such as from iron and steel.

It is also used in fireworks.

It is also used in medicine such as for constipation.

It is used as antiacid for heart burn.

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3 years ago

Substances that are readily combustible or may cause fire through friction

Dvinal [7]

Answer :

Flammable substances

Explanation :

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3 years ago

Use bond energies from Table 10.3 in the textbook to estimate the enthalpy change (ΔH) for the following reaction. C2H2(g)+H2(g)

Digiron [165]

Answer: $=176.6kJmol^{-1}$

Explanation:Bond energy of H-H is 436.4 kJ/mole

Bond energy of C-H is 414 kJ/mol

Bond energy of C=C is 620 kJ/mol

Bond energy of C≡C is 835 kJ/mol

$\Delta H= {\text {sum of bond energies of reactants}}- {\text {sum of bond energies of products}}$

$\Delta H$ = {1B.E(C≡C)+2B.E(C-H) +1B.E(H-H)} - {1B.E(C=C)+4B.E(C-H)}

$\Delta H= {1B.E(835kJmole^{-1})+2B.E(414kJmole^{-1}) +1B.E(436.4kJmole^{-1})} - {1B.E(620kJmole^{-1})+4B.E(414kjmole^{-1})}$

$=176.6kJmol^{-1}$

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3 years ago

Which of the following is an example of an abiotic factor? A wind factor B Human C bacterium D duck

solmaris [256]

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