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If you have ever made homemade ice cream,you know that you c

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If you have ever made homemade ice cream,you know that you cool the milk and cream by immersing the container in ice and a concentrated solution of rock salt (NaCl) in water.If you want to have a water-salt solution that freezes at -6.°C,how many grams of NaCl must you add to 3.0 kg of water?(Assume the van't Hoff factor i for NaCl is 1.85.)
If you have ever made homemade ice cream,you know that you c
题目的主要意思就是要求使溶液冰点比水下降6度时,需向3kg水中加多少NaCl.可以先求出氯化钠的质量摩尔浓度m.imKf=T（Kf为1.86,T为冰点下降的温度）求出m约为1.74mol/kg.那么3千克的水就需要5.23molNaCl,即约306gNaCl.
Kitty have you bought any ice cream? Would you have an ice-cream? Do you know the heated ice cream scoop?翻译 If you want to by an ice cream an you yesterday ice cream did have 连句子! 连词成句:cream,for,you,ice,do,have,dessert. --can i have an ice cream?--yes,help________ （you） Would you like to have some ice-cream? you can come and have ice cream here 改为祈使句 Do you have ice cream?这句话对吗?如果不对,是不是Do you have an ice cream have you ever thought that you是什么意思 do you know that/if