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

idk

explanation:

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)