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 is the radius of a nucleus related to its mass number ? View Solution In three moles of ethane(C2H6), calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane. View Solution How many molecules ...
The atomic mass of hydrogen is1.00794and that of oxygen is15.9994. Since there are two hydrogen atoms per molecule and one oxygen atom, the formula should look like this: molar mass (g) = 1.00794 g + 1.00794 g + 15.9994 g Therefore, the molar mass of H2O is18.01528 g. ...
- Since each H2 molecule contains 2 hydrogen atoms, and we need a total of 6 hydrogen atoms to saturate one mole of benzene, we can confirm that: Number of moles of H2=3 moles Conclusion:Thus, the number of moles of H2(g) required to saturate one mole of benzene is 3 moles. ---...
One mole of hydrogen atoms weighs just over a gram. molen(breakwater)SCSimplified Chinese防浪堤fáng làng dī SCSimplified Chinese防浪墙 The marina was protected by a mole. molen(harbor)SCSimplified Chinese有防浪堤的海港 The ship pulled into the mole in the evening. ...
Water (H2O) is made from 2atomsof hydrogen and 1 atom of oxygen. A mole of water molecules would be 2 moles of hydrogen atoms plus 1mole of oxygenatoms. From theperiodic tablewe see theatomic weightofhydrogenis 1.0079 and the atomic weight ofoxygenis 15.9994. ...
One mole of {eq}(NH_4)_2HPO_4 {/eq} contains how many moles of hydrogen atoms?Chemical Formula:For chemical substances to be presented, and to identify the elements forming them, chemical formulas are used as a notation of how they can be described in a single compound. The...
Suppose that you wanted to know how many hydrogen atoms were in a mole of water molecules. First, you would need to know the chemical formula for water, which is H 2 O. There are two atoms of hydrogen in each molecule of water. How many atoms of hydrogen would there be in two water...
"One mole" is close to the number of atoms in a gram of hydrogen. It’s also, by chance, a decent ballpark guess for the number of grains of sand on Earth. A mole is also a type of burrowing mammal. There are a handful of types of moles, and some of them are truly horrifying...
Number of particles is a more useful unit in chemistry than mass or weight, because reactions take place between atoms (for example, two hydrogen atoms and one oxygen atom make one molecule of water) that have very different weights (one oxygen atom weighs almost 16 times as much as a hydr...