A 1743 g piece of lead is dropped into 100 gof water intially at 20°C. The lead is intially 100°C. The lead eventually cools to 25°C, water has a specific heat of 4.184 J/g °C. What is lead's specific heat?
A.) 1.6 J/g °C
B.) 0.16 J
C.) 0.16 J/g °C
D.) 1.6 J

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

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so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer