Which statement about theories is FALSE? Theories are based on extensive scientific evidence.
Theories are based on extensive scientific evidence.

Theories explain broader topics than laws.
Theories explain broader topics than laws.

Theories explain observable phenomena in the universe.
Theories explain observable phenomena in the universe.

Theories may someday become a law.

yes

ya te ayud espera

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