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

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

hope this