How many grams of oxygen (O2) is required to burn 28.8 g of ammonia (NH3)? 4NH3 + 7O2 → 4NO2 + 6H2O

Molar Masses

NH3=17.0305 g/mol

O2=31.998 g/mol

NO2=46.0055 g/mol

H2O=18.0153 g/mol

a)15.3 g
b)94.9 g
c)54.1 g
d)108 g

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.

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