Bohr model is valid only for hydrogen and hydrogen-like species, but quantum mechanical model can explain all elements....
Potassium hydroxide (KOH) is the base.
Hydrobromic acid. A solution of hydrogen bromide gas in water.
Thus the answer is C.
Answer:
29.0 g
Explanation:
We know that we will need a chemical equation with masses and molar masses, so let’s start by gathering all the information in one place.
: 63.55 46.01
Cu + 4HNO₃ ⟶ Cu(NO₃)₂ + 2NO₂ + 2H₂O
Mass/g: 20.0
1. Use the molar mass of Cu to calculate the moles of Cu.
2. Use the molar ratio of NO₂:Cu to calculate the moles of NO₂.
3. Use the molar mass of NO₂ to calculate the mass of NO2.
In early ninetees it was used as a paint in watch factories.