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zhuklara [117]
3 years ago
5

Which of the following describes a chemical property of oxygen

Chemistry
1 answer:
monitta3 years ago
8 0

Which of the following describes a chemical property of oxygen

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How many moles of disulfur decafluoride are present in 3.99 x 104 molecules of this compound? moles
arsen [322]

<u>Answer:</u> The number of moles of disulfur decafluoride is 6.62\times 10^{-20}

<u>Explanation:</u>

We are given:

Number of disulfur decafluoride molecules = 3.99\times 10^4

According to mole concept:

6.022\times 10^{23} number of molecules are contained in 1 mole of a compound.

So, 3.99\times 10^4 number of molecules will be contained in = \frac{1mol}{6.022\times 10^{23}}\times 3.99\times 10^{4}=6.62\times 10^{-20}mol of disulfur decafluoride.

Hence, the number of moles of disulfur decafluoride is 6.62\times 10^{-20}

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3 years ago
Use the Periodic Table to determine the shape of the molecule represented by the following formulas.
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the answer is tetahedal and the next one is trigonal pyramidal

Explanation:

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Explain intermolecular forces cause water molecules to stick to a material like a glass pitcher​
natulia [17]

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Cohesive forces cause the water molecules to stick together with a lot of elasticity, allowing the water to function very much like a rubber into a material like a glass pitcher.

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3 years ago
Why do we use the mole concept ??
Kaylis [27]

Answer:

Here

Explanation:

Chemists need the mole concept to bridge the gap between the microscopic world of atoms to the macroscopic world of humans. As you know, the molecular level consists of particles that are invisible to us.

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Which of the atoms shown has an atomic number of 4?
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B. Be

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