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kiruha [24]
3 years ago
6

What does the illustrated symbol on the element key mean?

Chemistry
1 answer:
Sveta_85 [38]3 years ago
4 0

Answer: Each element has a symbol,one or two letters that represent the element much as your initials represent you. The symbol of an element represents one atom of that element. For 14 of the elements, the symbol consists of one letter.

Explanation:

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What is colligative property? why does theproperty changes the way that it does when the amount of solute is increased. State an
elena-14-01-66 [18.8K]

Colligative properties are those substances that depend on the number of substances in the solution, not in the identity of that substance. The property changes the way that it does when the amount of solute is increased because it enables the solute to be scattered more. For example, the freezing point of salt water is lower than that of the pure water due to the salt ions present in water.

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3 years ago
a sample of compound determined to contain 1.71 g C and 0.287 g H. The corresponding empirical formula is
fiasKO [112]

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Explanation:

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Step 1 : convert given masses into moles.

Moles of C = \frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{1.71g}{12g/mole}=0.142moles

Moles of H = \frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.287g}{1g/mole}=0.287moles

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

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The ratio of C: H = 1: 2

Hence the empirical formula is CH_2.

4 0
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