1 个(NH4)2HPO4 有2*4+1 = 9 个 H 所以1 mol (NH4)2HPO4 含有 9 mol H 现在 含有2 mol H，所以 (NH4)2HPO4的物质的量 是 2/9 mol
How many atoms are there in a 0.289-mole sample of sulfur? Chemical Formula: The chemical formula is the formula of a compound in which: We can see which atoms for a certain molecule. Also, we can determine the number of each atom. ...
How many H atoms are there in 2.5 mol H3PO4? Mole: The mole is a property that describes the amount of substance. Basically, this considers a certain number of molecules or atoms, which is quantified by Avogadro's number. This is useful in the expression of other quantities such as mol...
? 题目 英语高手帮下忙 化工英语 急 高分how many hydrogen atoms are in each of the following:(A)C2H5OH (B) Ca(CH3COO)2 (c)(NH4)3PO4? 用英语解答 完整详细点 谢谢 作业帮用户2016-12-06 举报 用这款APP,检查作业高效又准确!扫二维码下载作业帮 4亿+用户的选择 优质解答 There are 6 hydrog...
How many valence electrons are in Na then in the Na^+? How many valence electrons are there in BrF_3? How many valence electrons are in the pyridinium ion C5H5NH+? How many valence electrons do atoms of each of the following elements have? Na, Ar, Al, P ...
How many moles are in 16.48 g Mg? Answer in units of mole. Molar Mass: One mole is defined as6.022×1023atoms or molecules. Now since one atom or molecule has a unique mass due to the atomic model, each measurement of one mole will have a different mass depending on what material ...
H2SO4+ NH4OH ---> (NH4)2SO4+ H20 because as you said, sulfate ion has the charge of 2- and ammonium ion has a +1. Then, you should balance the number of atoms on each side. That is why you write the overall equation as ...
These chemical reactions RELEASE heat! Sodium (Na) in water: 2 Na + 2 H2O 2 NaOH + H2 + BOOM http://www.youtube.com/watch?v=92Mfric7JUc Potassium (K) in water: 2K + 2H2O 2KOH + H2 + BOOM http://www.youtube.com/watch?v=pPdevJTGAYY ...
How many moles of silver (Ag) atoms are there in 3.80 \times 10^{24} silver atoms? What is the molar mass of (NH4)2O? How do you find the mole ratio in a chemical reaction? What is Avogadro's number and how do you use it to find the number of moles present...
How many moles are equal to 3.25×1024 atoms of mercury? Avogadro Number:A constant number that illustrates the number of particles existing in the unit mole of the material is known as the Avogadro number. The unit to describe the Avogadro number is atoms per mole....