the mass of 4 moles of Co2 is ?
(1)22g
(2)44g
(3)88g
(4)176g
please help !
4) 176g
(4 mol CO2)*(molar mass CO2)/(1mol CO2)
To determine the mass of 4 moles of CO2, you need to first find the molar mass of CO2, which is the sum of the atomic masses of the element carbon (C) and two oxygen (O) atoms.
The atomic mass of carbon (C) is 12.01 atomic mass units (amu), and the atomic mass of oxygen (O) is 16.00 amu. Since there are two oxygen atoms in CO2, we multiply the atomic mass of oxygen by 2.
So, the molar mass of CO2 is:
(1 × atomic mass of carbon) + (2 × atomic mass of oxygen)
= (1 × 12.01 amu) + (2 × 16.00 amu)
= 12.01 amu + 32.00 amu
= 44.01 amu
Therefore, the molar mass of CO2 is 44.01 grams per mole.
To find the mass of 4 moles of CO2, you can multiply the molar mass by 4:
Mass of 4 moles of CO2 = 4 moles × 44.01 g/mol
= 176.04 grams
So, the mass of 4 moles of CO2 is 176.04 grams. Therefore, the correct answer is option (4) 176g.