What is the average atomic mass of an element with isotopes A, B, and C? [(mass of A) * (% of A) + (mass of B) * (% of B) +(mass of C) x (% of C)]
3
B.
(mass of A)
(% of A)
(mass of B
(% of B)
+
(mass of C)
(% of C)
C. (mass of A) x (% of A) + (mass of B) * (% of B) + (mass of C) (% of C)
O D.
(mass of A + mass of B + mass of C)
3

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color