Use the equation 2cu+o2--> 2cuo to find how many grams of copper react to produce 7.00 mol cuo. question options: 286 426 445 413

The  number of grams  of copper  reacted is   445  grams

calculation

2Cu +O₂ → 2CuO

from equation above the  mole ratio  of Cu:CUO  is 2:2 =1:1, therefore the moles of Cu  is also= 7.00  moles

mass=moles   x molar mass

from periodic table  the  molar  mass of Cu= 63.5  g/mol

mass= 7.00  moles x 63.5 g/mol =445   grams