Determine the amount of heat, in kJ, required to heat 51 g of solid Ca at 851C to 1,530 C. Melting Point = 851C Boiling Point = 1487C Molar Heat Capacities: Csolid = 26.2 J/mol C C liquid = 31.0 J/molC ΔH_fusion = 9.33 kJ/mol ΔH_vaporization = 162 kJ/mol

answer; i believe the correct answer is (solid gold);

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

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