the balanced equation for the formation of ammonia is
N₂ + 3H₂ ---> 2NH₃
molar ratio of N₂ to NH₃ is 1:2
mass of N₂ reacted is 8.0 g
therefore number of N₂ moles reacted is - 8.0 g / 28 g/mol = 0.286 mol
according to the molar ratio,
1 mol of N₂ will react to give 2 mol of NH₃, assuming nitrogen is the limiting reactant
therefore 0.286 mol of N₂ should give - 2 x 0.286 mol = 0.572 mol of NH₃
therefore mass of NH₃ formed is - 0.572 mol x 17 g/mol = 9.72 g
a mass of 9.72 mol of NH₃ is formed
The identity of the substance is Iron.
<h3>Properties of Iron</h3><h3>Chemical properties</h3>
- The element iron has the atomic number 26 and the symbol Fe
- Electronic configuration of Fe is [AR] 3d6 4s2
- The atomic weight of Iron is 55.847
- The element iron belong to the group VIII of the periodic table
- It is the fourth most prevalent element in the crust of the world
- It is a highly reactive element as it gets rusted readily in the moisture of air
<h3>Physical properties</h3>
- It is a heavy metal in the first transition series
- The color of iron is silvery grey
- High malleability and ductility
- It has a strong electrical conductivity.
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Answer:
OCl− + H2O ⇌ HOCl + OH−
Explanation:
Sodium hypochlorite is a corrosive base with pH 13, that will react with water in a neutralization process to finally obtein hypochlorous acid. This acid has a great disinfectant effect in water.
A.
Physical change
Step by step explanation;:)
Answer:
The missing information or their role in the discovery of the cell is as follows:
Robert Hooke: He was the first scientist to called cells to tiny box-like cavities he saw in cork and illustrated as cells.
A. Leeuwenhoek: he was a microscopist and microbiologist who used microscopes and observed many other living cells. He called animalcules to these single-cell living organisms later used to prove that cells are the fundamental unit of life.
Schwann and Schleiden: They presented the theory that suggested that the cells are basic building blocks of all living things.
Virchow: He observed that the cell dividing and come from pre-existing cells.
