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2 years ago

Some one help me please I'm stuck Show using two conversion factors how you would convert from 0.020 kg into mg.

Chemistry

1 answer:

julia-pushkina [17]2 years ago

4 0

Answer:

$=2.0x10^4mg$

Explanation:

Hello there!

In this case, when performing units conversions involving two proportional factors we need to make sure we first convert to the base unit and then to the target one; thus, since 1 kg = 1000 g and 1 g = 1000 mg, we set up the following expression:

$=0.020kg*\frac{1000g}{1kg} *\frac{1000mg}{1g} \\\\=2.0x10^4mg$

Best regards!

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Identify the solute with the highest van't Hoff factor. And how do you determine which one is highest?

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Answer : The correct option is, (A) $AlCl_3$

Explanation :

Van't Hoff factor : It is defined as the ratio of the experimental value of the colligative property to the calculated value of the colligative property.

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The dissociation of $AlCl_3$ will be,

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(B) $KI$

It is an electrolyte that dissociates to give potassium ion and iodide ion.

The dissociation of $KI$ will be,

$KI\rightarrow K^{+}+I^{-}$

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(C) $CaCl_2$

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The dissociation of $CaCl_2$ will be,

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