What is the chemical formula for nickel (iii) oxide? nio ni3o nio3 ni2o3

Hello!

The chemical formula for Nickel (III) Oxide is Ni₂O₃

In chemical nomenclature, we read from left to right:

Then we combine the two ions as follows, multiplying each one by the charge of the other to neutralize the charges:

2Ni⁺³ + 3O⁻² → Ni₂O₃

So, the chemical formula is Ni₂O₃

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Putting this here just because the answer seems to have some blurry/unreadable parts, I do not take credit for solving this question... The answer is Ni2O3

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2