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Fill in the blank: Do you usually take a bus ______ the market?
The correct preposition is 'to' when indicating destination. 'Take a bus to the market' is standard English usage.
According to the text, the largest single expense in most organizations is:
The text explicitly states that the largest single expense in most organizations is labor cost, which is often considerably higher than necessary due to problems like absenteeism, tardiness, and discrimination. This makes effective HRM critical for cost management.
A solution of 62 g of ethylene glycol in 250 g of water is cooled to $-10°$C. If $K_f(\text{water}) = 1.86\ \text{K kg mol}^{-1}$, what mass of water (in g) separates out as ice?
Molar mass of ethylene glycol (C$_2$H$_6$O$_2$) $= 62\ \text{g mol}^{-1}$
Moles of glycol $= \dfrac{62}{62} = 1\ \text{mol}$
Let $w$ g of water freeze. Remaining water = $(250 - w)\ \text{g}$.
At $-10°$C: $\Delta T_f = 10$
$m = \dfrac{1}{(250-w)/1000} = \dfrac{1000}{250-w}$
$10 = 1.86 \times \dfrac{1000}{250-w}$
$250 - w = \dfrac{1860}{10} = 186$
$w = 250 - 186 = \mathbf{64\ \text{g}}$
Wait — that gives 64 g (option C, index 2). Let me recheck: $250-w=186$, $w=64$. Official answer is 48 g. Using $w=48$: $250-48=202$, molality $=1000/202=4.95$, $\Delta T_f=1.86\times4.95=9.2\neq10$. The correct answer is indeed 64 g (index 2).
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