Q.express as an ion
1.FeCl2
2.CuO
3.Fe2S3
4.CrCl3
Q.Calculate each of the following quantities in 2.20 moles H3PO4
1.moles of H
2.moles of O
3.atoms of P
4.atoms of O
Q.Calculate the number of grams in each of the following
1.1.50moles of Na
2.3.05moles of Ca
3.0.145moles of Sn
4.1.40mole of Cu
人气:274 ℃ 时间:2020-06-03 20:35:08
解答
Fe2+/ 2Cl-Cu2+/ O2-2 Fe3+/ 3S2-Cr3+ / 3Cl-6.60 moles of H8.80 moles of O2.20 moles of P = (2.20)(6.02*10^23) = 1.32 * 10^24 atoms8.80 moles of O = (8.80)(6.02*10^23) = 5.30 * 10^24 atoms(22.99 g/mol N...
推荐
- A compound contains only carbon,hydrogen,and oxygen.Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37
- 几道英语化学题!
- Vitamin B12,cyanocobalamin,is essential for human nutrition.It is concentrated in animal tissue but not in higher plants
- members of the homologous series (CnH2n) are considered to have two different kinds of reactions.Explain why neither of
- 英语翻译
- 1.有一只玻璃瓶,它的质量为0.1kg,当瓶内装满水时,瓶和水的总质量为0.4kg,用此瓶装金属颗粒若干,瓶和金属颗粒的总质量为0.8kg,若在装金属颗粒的瓶中再装满水时,瓶.金属颗粒和水的总质量为0.9kg,求金属颗粒的质量和密度.
- 一道深刻而困难的应用题
- 意思是什么也没想 什么也没考虑的成语
猜你喜欢
- 已知关于x的方程(x-m)/2=x+m/3与(2x+1)/3=3x-2的解互为倒数,求m的值
- 太阳为什么可以发出强烈的光
- make sure of sth.怎么翻译
- “有什么作用”和写作方法有什么区别
- 如果a大于0,b小于0,那么ab( )0 b分之a( )0 若a小于0,b小于0,则ab( )0?b分之a( )0
- 效应T细胞分泌的抗体是怎样进入发炎部位的
- 已知△ADE∽△DEF,诺△ABC的三边长分别为5cm,6cm,7cm,而△DEF中的一边长为4cm,你能求出△DEF的另外两边的
- 订书机是不省力也不费力的杠杆吗