How much heat is required to vaporize 41.5 g g of acetone (C3H6O) ( C 3 H 6 O ) at 25 ∘C ∘ C ? The heat of vaporization for acetone at this temperature is 31.0 kJ/mol k J / m o l

i think   the answer is c hope i'm right

b.

the accuracy of the data.

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