1. What is the percent of salt water in the world? (percent) 相关知识点: 试题来源: 解析 Approximately 96.5% of the world's water is salt water found in oceans and seas. The question asks about the percentage of salt water in the world....
In a science experiment, the ratio of salt to water is 3/8. What fraction represents the amount of salt in the mixture? A. 3/8 B. 8/3 C. 5/8 D. 8/5 相关知识点: 试题来源: 解析 A。本题考查分数的表达。题干中明确给出盐和水的比例是 3/8,所以盐在混合物中的比例就是 3/8。
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百度试题 结果1 题目 翻译句子(3)Sea water contains salt.海水中含盐(4)Little John felt the bag, curious to know whatit contains.小约翰摸了摸袋子,想知道里面装着什么 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
B. It dissociates into sodium ions and chloride ions. C. It turns into gas. D. It remains unchanged. 相关知识点: 试题来源: 解析 B。中文解析:“When salt is dissolved in water, it dissociates into sodium ions and chloride ions.”,盐溶解在水中会解离成钠离子和氯离子。反馈 收藏 ...
If we add salt to water, what will happen to the boiling point of the water? A. It will increase. B. It will decrease. C. It will stay the same. D. The water will not boil anymore. 相关知识点: 试题来源: 解析 A。解析:向水中加盐会使水的沸点升高。B 选项不会降低;C 选项会改变...
Morethan60percentofpeopleexperienceeye problemsassociated with digitaleyestrain.And bluelight,itseems,isn?tthecause.Instead,our eyesaresostrainedbecausemostofusblinkless whenwestareatourdigitaldevices.Soifeyestrainistheissue,blue-light-blockingglassesare probablyoflittleuse. 8.Whatdoweknowaboutbluelight? A....
While salt is universally known for its culinary and preservative uses, adding flavor to food and extending its shelf life, Saults are typically associated with the natural beauty and power of flowing water, and often become sites of interest or locations for hydroelectric power plants. 12 Salt'...
Of course,the sea is very large.In the world there is more sea than land.If you swim in the sea,you know that the water is salty(咸的).Rivers take salt from the land into the sea.Some places of the sea are more salty than other places.Do you know the Dead Sea(死海)?Fish can...
Salt Dissolved In Water: Molecular Interactions Already noted was the polarity of both the water molecule, which you can imagine as roughly boomerang-shaped, and the NaCl molecule, which looks more like a short dumbbell. When table salt is placed in water, the slightly electropositive sodium por...