Calculate energy associated with the cooling of 15.3 g of steam from 125.0°C cools to 100.0 °C. Use the constants provided: A Hvap, Enthalpy of vaporizītion of liquid water is 40.67 kJ/mol; Enthalpy of fusion for ice, A Htus = 6.02 kJ/mol; specific heat
capacity for water 4.184 J/g °C), and specific heat capacity for vapor 1.87 J/g °C).

the answers would be

the first one and the second one

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

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.