Cu(s) + 4hno3(aq)= cu(no3)(aq)+ 2no2(g) + 2h2o(l) how much no2 gas would be formed by the reaction of 20.0g of cu?

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.

i think its 100.

hope this !