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约找到 795 条结果,耗时 0.344 秒
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kevin
14年11个月前
回复于
跳蚤市场
内容:如果想要多少告诉我我称给你)氢氧化钠 430g碳酸氢钠 207g硫酸铜 490g
氯酸钾
480g铅粒 500g
元旦了· 换试剂啦··~
z3987232
15年1个月前
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内容: 5.硝酸钠 50g 6.电石 50g 7.硝酸铵 50g 现有供换试剂: 1.
氯酸钾
我今天终于知道为什么大家这么反对使用PVC了
TerayTech
10年6个月前
发表于
喷气推进
内容:以前我经常发视频,我做火箭每次都是用PVC管,因为价格低廉,重量轻,但在今天做发动机的时候我才发现PVC是多么的脆弱 这次发动机燃料有点受潮,第一次点火没有点燃,所以我到了点
氯酸钾
助燃,所以在视频中
气动药剂的参考配方
清风_88
17年11个月前
发表于
喷气推进
内容:看大家对推进药比较感兴趣,发下这方面的东东气动药剂的参考配方 一 二三 四 五 六 七 八
氯酸钾
8 10 硝酸钾 35 45 69 71 67 58 66 70 硝酸锶 10
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kevin
14年11个月前
发表于
跳蚤市场
内容:如果想要多少告诉我我称给你) 氢氧化钠 430g碳酸氢钠 207g 硫酸铜 490g
氯酸钾
480g铅粒 500g
回 8楼(溴化乙基镁) 的帖子
第七骑士团
12年2个月前
回复于
喷气推进
内容:恩,我知道
氯酸钾
不稳定,不过放心,我对物理和化学拥有完全知识的情况下才会做实验的。
小米牌火箭发射点火器
smith
8年10个月前
回复于
高电压技术
内容:另外这个点火其实发现也要点火头配合,尽量使用
氯酸钾
系的点火药,就是火柴头的那种,我试过用0.2mm的镍铬丝,连接6mm电缆后,按下开关桥丝不会烧断或者爆掉,能量可以在塑料薄膜上划出一条口子,但是似乎热量降低得也快
Re:氯气中毒了 头晕眼花 感觉喘不上来气
热爱人生
11年11个月前
回复于
化学
内容:过量的氯气会中毒,少量的氯气消毒效果很好,不要害怕,我经常制取氯气,没通风厨时也是熏得头昏脑胀的、喉咙疼,过几天就没事了,感冒高发季节,释放点氯气很管用,没有
氯酸钾
和浓盐酸可以用洁厕灵和消毒液代替,效果很好的
讨论一下,关于由空气中放电制取二氧化氮的可行性
江南夜雨
11年7个月前
回复于
化学
内容:不是通过这些技术谋利的商人,什么成本高,电耗大,这是商人该考虑的问题,我们是爱好者,无论这种方法多不可取,总比氨氧法容易实现,对于我们这里,很难买到这些强酸,不是有钱就能买到,所以只能另想它法,还有我这里已经可以家庭自制,
氯酸钾
粉笔炸弹带来的反思——对高中趣味化学实验的异议
CHAMPIONHOME
10年1个月前
回复于
化学
内容:俺上高中时发明个很好的方法玩氯磷:使用木工用的乳白色的乳胶漆,放入一定量的红磷,乳胶漆溶解红磷的能力超过你想象,充分溶解后倒入一定比例的研磨后的
氯酸钾
粉末,使用木棍轻轻搅拌,均匀后把混合物倒入用牛皮纸卷的纸筒里
用高氯酸钾怎么做火箭燃料啊
q903672849
12年11个月前
回复于
喷气推进
内容:在《疯狂科学》书上有个作火箭燃料的章节就是用高
氯酸钾
做氧化剂,配上士力架,没错,就是我们吃过的,超市有卖的士力架,我也没试过,把他们小心的压着,融合起来,有这个配方,不过可能和KNSU的效果差不多。
化学入门采购以及kn的提纯
客星晨出东方
1年10个月前
回复于
化学
内容:就是因为伤亡过于惨重才删的啊,而且很多地方自编教科书,教辅资料都还保留,而且我的意思是如果这种万能简便的危化品制备方法被编出来了,那么一定会在化学圈子里流传,试想如果人人都搞的到
氯酸钾
和红磷,那么一年不知道要多多少事故
高氯酸钾的电解制法
zx-48750
6年3个月前
回复于
化学
内容:最近发现个人的高
氯酸钾
的售货渠道已经被封死,所以只能考虑电解了。
粉笔炸弹带来的反思——对高中趣味化学实验的异议
1211
10年1个月前
回复于
化学
内容:俺上高中时发明个很好的方法玩氯磷:使用木工用的乳白色的乳胶漆,放入一定量的红磷,乳胶漆溶解红磷的能力超过你想象,充分溶解后倒入一定比例的研磨后的
氯酸钾
粉末,使用木棍轻轻搅拌,均匀后把混合物倒入用牛皮纸卷的纸筒里
糊精-碘化钾氧化性测试试纸和常见氧化剂的测试
smith
9年9个月前
回复于
化学
内容:引用 ne555:用稀硫酸的话,硝酸钾那组应该也不会变色,高
氯酸钾
我不太确定稀硝酸氧化碘离子只在热力学可行,在动力学不可行。
求份点火发动机的简易图.
KFWJ
9年10个月前
回复于
喷气推进
内容:引用 FROZEN巨擘:可以考虑用铝热点, 少量铝热剂混点
氯酸钾
,插一根电子点火头然后包好,就这样做一个铝热点火头,点火产生温度高,温度保持久,对燃料柱的外力扰动小,就是有点引燃得不是很均匀的小问题(
化学药品买多了,如何销毁
甘露醇六硝酸酯
9年10个月前
回复于
化学
内容:镁粉
氯酸钾
这种,也经常会用到,扔了多亏再说也不是什么剧毒或者很危险的药品,实在用不完找个安全的地方密封存起来就行了啊销毁了以后想用就该后悔了。。
求购一些点火头
哈哈哈哈哈士奇
7年4个月前
回复于
跳蚤市场
内容:话说我一直用
氯酸钾
和碳粉或者偶氮四唑铅+火棉点火。。
用高氯酸钾怎么做火箭燃料啊
bkh123
13年7个月前
回复于
喷气推进
内容:-15 21:07发表的 : ....knsu 蛋疼啊 炸过好几次 用磁力恒温加热搅拌器 照样炸 我的人品 啊 不知道用电炉行吗 KNSU都炸,高
氯酸钾
就更炸
我的火箭制作经历
阿丕
18年6个月前
发表于
喷气推进
内容:这段时间制造的火箭成功率有所提高,采用了
氯酸钾
为氧化剂的火箭燃料,以不断的爆炸为代价,起飞了很多火箭。,但是
氯酸钾
的局限性随着载荷的增加而越来越明显,更大的推力要求燃烧压力有所提高,这就使
氯酸钾
以爆炸形式反应的几率大大提高。
新人 请教如何制作火箭
dingyuanyu
14年9个月前
发表于
喷气推进
内容:KNDX的简单成熟制备方法目前拥有:硝酸钾
氯酸钾
甘油 葡萄糖 蒸馏水 升华硫最好详聊.........ps:我突然看不到烟花区了,我发的帖子又被虎哥移动过去,之后我就悲剧的看不到自己的帖子了[s:246
测试RNX燃烧后生成大量灰绿色残渣
HXKRRRR
7年0个月前
回复于
喷气推进
内容:估计二氧化锰会很棒,有可能的话试试加点高
氯酸钾
加铝粉?,hhhh别加高
氯酸钾
,那样压强指数可能会暴增,就失去RNX本来的意义了。
化学版实验索引 持续更新
thallium2012
14年2个月前
发表于
化学
内容:256207制备二草酸根合铜(Ⅱ)酸钾XXXXXXXXXXXXXXXXXXXXXXXX/t/256198还原银---保险粉法XXXXXXXXXXXXXXXXXXXXXXXX/t/286619【实验】制备高
氯酸钾
,XXXXXXXXXXXXXXXXXXXXXXXX/t/2802610【實驗】电解法制备高
氯酸钾
XXXXXXXXXXXXXXXXXXXXXXXX/t/28941物化类1[实验]粗略测定Cu2+/Cu的标准电极电势
D3点群-简单络离子--三草酸合铁(Ⅲ)酸钾的制备
TBsoft
7年4个月前
回复于
化学
内容:高
氯酸钾
难溶于水,但高氯酸钠却很易溶于水,就是一个典型的现象,其实这一现象会出现在很多钾盐上,试考察一些常见较大阴离子钾盐在0摄氏度(不是20摄氏度)时的溶解度:硫酸钾:约7.4g
氯酸钾
:约3.3g重铬酸钾,:约4.7g高锰酸钾:约2.8g高
氯酸钾
:仅约0.76g过二硫酸钾(K2S2O8):20摄氏度时也只有约4.7g可见,很多大阴离子钾盐,低温下溶解度较低或者很低,工业上正是利用这一特点,很多钾盐的结晶可以采用降温结晶的方法获取,大学无机化学中的很多制备实验都是制备钾盐,例如
氯酸钾
、电解法制备过二硫酸钾等,都是利用了某些钾盐低温下溶解度较低,容易结晶析出这一特点。
[实验过程]测定氯酸钾质量分数[科创基金项目]
UICalc
4年8个月前
回复于
化学
内容:移液管还没买滴定管可以考虑.待测的
氯酸钾
,自制;碘化钾,西陇化工,分析纯;五水合硫代硫酸钠,西陇化工,分析纯;可溶性淀粉,西陇化工,分析纯;冰乙酸,大茂,分析纯;三水乙酸钠,西陇化工,分析纯;L(+)-
碘酸钙的制备
轻疯科研中心
13年4个月前
发表于
化学
内容:以碘酸钙的制备为例,了解物质制备的过程 2.掌握过滤、蒸发、洗涤、移液与滴定等实验操作 3.了解利用溶解度的差异制备物质的过程 4.体验通过实验的方法获取知识的过程 [size=3][font=宋体]【实验原理】
氯酸钾
,0.09 0.17 0.24 0.38 0.52 0.65 0.66 [/tr]KCl 28.0 31.2 34.2 37.2 40.1 45.8 51.3 [/table]【实验用品】 碘(CP)、
氯酸钾
,量筒、烧杯、温度计、胶头滴管、研钵、pH试纸、滤纸、药匙、 电子天平、电炉、直形冷凝管、布氏漏斗、抽滤瓶、注射器、玻璃棒 【实验步骤】 1.碘的氧化: 在圆底烧瓶中加入2.2g碘(事先研碎)、2.0g
氯酸钾
和,震荡,使
氯酸钾
溶解。
化学药品买多了,如何销毁
smith
9年10个月前
回复于
化学
内容:引用 王者归来abs:不用担心 自己留着就好了镁粉这么好的东西居然担心用不完我告诉你 第一次我买
氯酸钾
的时候老板给我说一次买两瓶 很快就用完了 我不信现在我信了 氧化剂我都多买一瓶 是的,KNO3确实消耗很快
(#‵′)普通小火箭不好玩了!做个这样的东东。。。
北极熊
15年3个月前
回复于
喷气推进
内容:氯酸盐类型的,本来撞击感度就高,当然会爆炸我不是要你用火药来发射,而是让你用压缩空气来发射,蛋托用得好的话能量利用率很高的当时我实验碰炸引信的时候,用的是红磷和
氯酸钾
的那种,,从炮膛发射出去,绝对没问题
郁闷,含泪求解
juggernaut
14年4个月前
回复于
跳蚤市场
内容:黑龙江问题不大,市区的店可以轻易买硝酸钾,不过我还有两瓶没开封的存货,
氯酸钾
店里也有,只是标签被‘背’过去了,当时问店家,她直接拿了一瓶让我看‘成色’估计是我去的太多了…第一次卖东西给你很谨慎是必然的,
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