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3 years ago

Which of the following elements would you expect to be

Chemistry

1 answer:

alexdok [17]3 years ago

6 0

Answer:

Sulfur (S)

Explanation:

Elements present in the same group share common chemical properties. Oxygen, Sulphur and other elements are present in group 16/VIA which is also known as chalcogens.

Sulphur and Oxygen have similar electronic configuration. They share the same chemical properties as they are associated with the same group. Oxygen and Sulphur reacts with the Hydrogen gas in a similar manner. They do not belong to the same period.

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2 years ago

What is the mass in 6.34x10^23 molecules of calcium chloride

Liono4ka [1.6K]

Answer : The mass of calcium chloride is, 116.84 grams

Solution : Given,

Molar mass of calcium chloride, $CaCl_2$ = 110.98 g/mole

Number of molecules of calcium chloride = $6.34\times 10^{23}$

As we know that,

1 mole of calcium chloride contains $6.022\times 10^{23}$ molecules of calcium chloride

or,

1 mole of calcium chloride contains 110.98 grams of calcium chloride

Or, we can say that

As, $6.022\times 10^{23}$ molecules of calcium chloride present in 110.98 grams of calcium chloride

So, $6.34\times 10^{23}$ molecules of calcium chloride present in $\frac{6.34\times 10^{23}}{6.022\times 10^{23}}\times 110.98=116.84grams$ of calcium chloride

Therefore, the mass of calcium chloride is, 116.84 grams

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3 years ago

When water and alcohol are mixed, the final volume is less than the total of volume of alcohol plus water added due to .......

tigry1 [53]

Answer:

molecules take up more space

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2 years ago