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【简答题】
氨在常温下是一种气体,它易溶于水,溶于形成氨水。为了探究氨溶于水的过程中有没有发生化学变化,某兴趣小组进行了实验探究,请把实验报告补充完整。 【实验目的】对氨与水反应情况的探究。 【实验用品】蘸有酚酞的白色纸干花、NaOH溶液、氨气、蒸馏水、喷水瓶、集气瓶 【实验内容】 【实验现象】(1)白色纸干红色的是 (用“①”、“②”、“③”、“④”填空,下同),白色纸干花不变色的是 。 【实验结论】氨溶于水发生了化学反应,得到的溶液呈碱性。 【实验思考】(2)氨与水反应后的产物是 (写化学式)。 (3)当温度升高时,氨水中的氨又会逸出,故保存氨水时应注意 。 (4)氨水与盐酸反应生成铵盐和水,写出反应的化学方程式 。
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举一反三
【简答题】Please tell the cultural differences between China and the US concerning health and advice.
【单选题】—Hi, Lily. Happy New Year! — _____
A.
Thank you.
B.
Thank you all the same .
C.
I ’ m OK .
D.
The same to you .
【单选题】建筑安装工程概算费用计价中,下列不属于总价综合费用的是( )。
A.
安全文明施工基本费
B.
提前竣工增加费
C.
二次搬运费
D.
行车、行人干扰增加费
【单选题】Health is a cultural concept that is defined differently in different cultures. The prevailing definition of health has evolved from the “absence of illness” to the broader term, wellness, with its de...
A.
cultural concepts
B.
definition of health
C.
cultivating self-esteem
D.
eating a healthful diet
【单选题】—Hi, Lily. Happy New Year! —_____
A.
Thank you.
B.
Thank you all the same.
C.
The same to you.
【判断题】竹材径级小,壁薄中空,具有尖削度,且结构不均匀,各向异性非常显著。因此很容易加工。
A.
正确
B.
错误
【判断题】竹材径级小,壁薄中空,具有尖削度,且结构不均匀,各向异性非常显著。因此很容易加工。
A.
正确
B.
错误
【多选题】It is when a health professional recognises a client's or patient's culture is different from his or her own and engages in an equal partnership of negotiation when facilitating care. Health professio...
A.
The first stage is cultural awareness, when we recognise another person's cultural identity, heritage, ethnohistory and stereotype.
B.
The second stage is gaining the necessary cultural knowledge to understand the client's or patient's health beliefs, anthropological, sociological and biological differences, and health inequalities.
C.
The third stage is cultural sensitivity, when the professional uses empathy, interprofessional communication skills, trust, respect, acceptance, appropriateness, and awareness of the barriers that impede sensitive practice.
D.
The final stage is cultural competence, when a health professional uses appropriate assessment and diagnostic and clinical skills to challenge prejudice, discrimination and inequality to provide quality care.
【简答题】Read,choose and fill in the blanks.(选择正确的单词填空。) why wear what nice old good Joy:Hi,Lily. I'll go to a party this Sunday. What can I 1. ? Lily:2. don't you wear your dress? Joy:Which one? The blue dres...
【简答题】Read and answer.阅读短文,回答问题。 Hi! I’m Lily. I live in a big house. My address is 190 Ninth Avenue. My favourite colour is green. Sarah is my friend. She lives in an apartment. Sarah is a girl, too. She i...
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