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1 year ago

Any expert know what is the answer?

Chemistry

1 answer:

cupoosta [38]1 year ago

3 0

Alkanes are non-polar: not soluble in water

alcohol is polar: soluble in water

The polarity of alcohols is affected by the -OH (hydroxyl) group, more OH, more polar, while non-polarity of alcohols is influenced by the carbon chain. the longer the carbon chain, the lower the polarity, the lower the solubility

butane : alkane: not soluble

1-2, ethanediol: alcohol: has 2 OH

Butanol has a longer carbon chain than ethanol

So the order of solubility in water (from largest to smallest)

1-2, ethanediol, ethanol, butanol, butane

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1 year ago

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2 years ago

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How much energy is required to raise the temperature of 10.6 grams of gaseous neon from

Alona [7]

Answer:

Approximately $1.95 \times 10^{2}\; \rm J$ .

Explanation:

Look up the specific heat of gaseous neon:

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$\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K$ .

Let $m$ denote the mass of a sample of specific heat $C$ . Energy required to raise the temperature of this sample by $\Delta T$ :

$Q = c \cdot m \cdot \Delta T$ .

For the neon gas in this question:

$c = 1.03\; \rm J \cdot g^{-1}\cdot K^{-1}$ .
$m = 10.6\; \rm g$ .
$\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K$ .

Calculate the energy associated with this temperature change:

$\begin{aligned}Q &= c \cdot m \cdot \Delta T \\ &= 1.03\; \rm J \cdot g^{-1}\cdot K^{-1} \times 10.6\; \rm g \times 17.9\; \rm K \\ &\approx 1.95 \times 10^{2}\; \rm J\end{aligned}$ .