molality

amount of temperature change depends linearly on the molality of b, with a constant that depends on what the mixture is.

温度的变化量，正比于B的摩尔数，比例常数和混合物是什么有关。

I mean, the molality of B divided by the change in temperature.

意思就是B的质量摩尔浓度，除以温度变化量。

i said we're going to use molality.

刚才说我们要用质量摩尔浓度。

molality. molality is the number of moles of solute divided by kilograms of solvent.

质量摩尔浓度，就是溶质的摩尔数，除以溶剂的质量。

the number of moles of solute in 1, 000 g of solvent is its molality (m).

000克溶液中溶质的莫耳数是它的重量克分子浓度（m）。

now, the only i can do is, i'm trying to get at molality here.

现在，唯一能做的就是，尽量往质量摩尔浓度上靠。

so this is the molality of b times the molecular weight of a.

所以这就是B的质量，摩尔浓度乘以A的分子量。