Explanation:
The kinetic energy of an object is given by :

1. Mass, m = 5 kg
Speed, v = 2 m/s

2. Mass, m = 71 kg
Speed, v = 1 m/s

3. Mass, m = 71 kg
Speed, v = 5 m/s

4. Mass, m = 1816 kg
Speed, v = 25 m/s

Moles of Zn present= 2.36/65.4= 0.0361 moles
Therefore maximum moles of ZnO= 0.0722
Mass of one mole of ZnO= 81.4
Mass of ZnO produced= 0.0722 x 81.4= 5.87g
Answer:
<u><em>(B.) a significantly lower mass that protons</em></u>
Explanation:
The mass (in g) of an electron is 9.11 ×
g, which is significantly lower than the mass of protons and neutrons which are approximately the same. They are extremely small (equal to 0 amu), contributing nothing to the overall mass of the atom.
The nucleus has a mass of 1 amu and is positively charged.
Molar mass of FE2O3=2(55.85)+3(16)=159.7
2.56g*1mol/159.7*2mol/1mol*55.85g/1mol=1.79g