Question

Table 1. Selected Properties of Some Metals Atomic Mass Specific Heat (J/g°C) Color or Metal Density (g/mol) Appearance Magnesium 24.31 1.02 Shiny gray metallic 1.738 g/cm Aluminum 26.98 0.90 Silvery gray metallic 2.70 g/cm Nickel 58.69 0.44 Silver, gold tinge metallic 8.908 g/cm Copper 63.55 0.38 Lustrous red-orange 8.96 g/cm Zinc 65.38 0.51 Silver-gray metallic 7.14 g/cm 107.87 Shiny white metallic 10.49 g/cm Silver 0.24 Gold 196.87 0.13 Metallic yellow 19.30 g/cm 9.78 g/cm 0.12 Lustrous brownish silver Bismuth 208.98

Answer 1

torm the question we can say that heat released by because Temperature decrease while head is. gain by water because Temperature increase. - Preleased again 2 -4 = 22 Megative sign because heat released. heat (q) = m.c.at where, m= mass Specific heat ca specific heat of water (Cu) = 4.18J/g.c) AT = Temperature change (TP-TO - 28.5) =) - Mm CmAT = Mw CwAT. - - 59.13 *c (29.7 -100.5)= 97.07 *4.184(29.7. =) 9186.4* c = 486.90 C= 0.116. Ilg.c. cu 0.12 J/g.c hence unknown metal= Bismuth,