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Anonymous users2024-02-111.As the title, the amount of O atomic matter is 1mol, and there are 4 O atoms in each H2SO4 molecule, so the amount of H2SO4 molecular substance is.
2.As the question, the amount of iron ion species is 1mol, and there are 2 iron ions in each Fe2(SO4)3, so the amount of Fe2(SO4)3 species is.
3.As the question suggests, there are 3 chloride ions in each FeCl3 [I don't think it's a chlorine atom], so there are 6 chloride ions in 2molFeCl3.
4.The relative molecular mass of vitamin C is 176, and the molar mass is equal to 176g mol, so the mass of vitamin C is.
5.There are 1 potassium ion and 1 chloride ion in each KCl for a total of 2 ions, so there are a total of 2* ions in it.
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Anonymous users2024-02-10One: 1mol O,so H2SO4 (A H2SO4 molecule has 4 O, so. ）
2: 1mol Fe3+ so Fe2(SO4)3 (same as above) 3: 1mol FeCl3 has 3mol Cl, so 2 mol FeCl3 has 6mol Cl
Four: The relative molecular mass of C6H8O6 is 176, so its molar mass: 176g mol, so 176*
Five: The total number of ions in it? Right? If yes, it is.
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Anonymous users2024-02-091) O atoms to the 23rd power = 1molo atoms.
1mol of H2SO4 has 4mol of O atom.
Now there is 1mol of o atoms.
It is the H2SO4 molecule that exists.
2) 23 to the power of Fe3 + 1mol Fe3 1mol Fe2(SO4)3 has 2mol Fe3 and now has 1mol Fe3
There is Fe2(SO4)3
3) The number of chlorine atoms is 2 mol*3*.
4) The quality of vitamin C (C6H8O6).
5) Is it? Total number of ions in kcl = pcs.
The words in question 123 may be a bit big, you can see clearly
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Anonymous users2024-02-08If you ask a few, you need to use na to say 23 of 1na=.
1 na sulfuric acid molecule, 2 na hydrogen atoms, 4 na oxygen atoms square) is, so electrons are required.
There's a proton, an electron.
The chemical formula of magnesium chloride is MgCl2 with 2 Cl, so MgCl is 2mol, 2x (24+
It contains the same amount of Cl as sodium chloride (NaCl), so it is. 5）=？I count this Moore as a newcomer to knowledge, I didn't understand it very well before, and I'll know if I do more questions in the future. That one has to be learned well, and it will be used later.
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Anonymous users2024-02-07Cl2 can replace br2. The results indicated that Cl2 was more reducible than Br2, i.e., non-metallic activity was stronger. The same goes for i2>s br2>i2
So Cl2>br2>i2>s
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Anonymous users2024-02-06The sodium hydroxide solution increases weight, that is, carbon dioxide is generated, and the mass of carbon monoxide participating in the reaction is, and the mass of oxygen in the consumed iron oxide is.
The mass of oxygen in 32g of iron oxide is 32g*48 160 = the mass of oxygen in the remaining ferric tetroxide is the mass of iron tetroxide, and the mass of ferric oxide is the mass of elemental iron.
Mass fraction of elemental iron.
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Anonymous users2024-02-054co+fe3o4=3fe+4co2
m(fe3o4)
m(fe3o4)=
m(fe)=
Mass fraction of iron =
Hope it helps, satisfied, dear!
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