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uranmaximum [27]
4 years ago
11

Why does aluminium oxide (Al2O3) have a higher melting point than sodium oxide (Na2O)?

Chemistry
1 answer:
Lilit [14]4 years ago
5 0

Al2O3 has a higher melting point than Na2O. This is because the ionic bond between Al3+ ions and O2- ions is stronger than that between Na+ and O2-. The charge on the Al3+ ion is larger than that of the Na+ ion

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How many moles of water are produced when 3.45 moles of KMnO4 react? Give your answer to the nearest 0.1 moles. moles H2O
andrew11 [14]

Answer:

13.8 moles of water produced.

Explanation:

Given data:

Moles of KMnO₄ = 3.45 mol

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Solution:

Chemical equation:

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Moler ratio of water and KMnO₄:

             KMnO₄       :        H₂O

                2             :          8

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Lead has a density of 11.3 g/cm3 . what is the volume of a 15.1 g block of lead?
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