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Evgesh-ka [11]
3 years ago
5

1. How many atoms are present in 64.0g of Oxygen?

Chemistry
2 answers:
hammer [34]3 years ago
7 0
64/16 = 4 so four molecules
VLD [36.1K]3 years ago
3 0
Answer. molar mass of oxygen is 16 grams, it means that 1 mole oxygen weighs 16 grams. therefore 64 gram oxygen = 64/16 = 4 mole oxygen. 1 mole of any element contains 6.022 * 10^23 atoms in it
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.Write a short paragraph describing how electronegativity and molecular shape determine the polarity of a molecule. In your para
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Answer:

See explanation

Explanation:

Electro negativity refers to the ability of an atom in a molecule to attract the shared pair of electrons of a bond closer to itself.

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However, the occurrence of polar bonds in a molecule alone does not guarantee the polarity of the molecule. The polarity of a molecule also depends on the shape of the molecule since dipole moment is a vector quantity.

A molecule is polar when the resultant dipole moment which is determined by the shape of the molecule is non zero.

For instance, CO2 contains two polar C-O bonds but the molecule is non polar because the two dipole moments cancel out. Also, symmetrical molecules are nonpolar irrespective of the presence of polar bonds in the molecule.

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4 years ago
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5 0
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