a major component of gasoline is octane (C8H18). when liquid octane is burned in air it reacts with oxygen (O2) gas to produce carbon dioxide gas and water vapor. calculate the moles of octane needed to produce 1.50 mol of water.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally

im doing test rn im going with 2 but ill give answer if itss wrong,   : )