Survey of Chemistry I Worksheet2 1) Discuss cooling and heating curves. 2) Complete the folowing nuclear reaction 99m 43 43 3) Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element 1s 4) Write the electron arrangement for potassium (atomic number 19)? 5) The product from the alpha decay of U is 6) Nitrogen-17 undergoes beta decay. What is the isotope produced in the radioactive decay? 7) Completes the following equation. 92 3 240 95 24, 97 8) The nuclear symbol that completes the equation is a(n) 58 26 59 9) lodine-123, which is used for diagnostic imaging in the thyroid, has a half-life of 13 h. If 50.0 mg of I-123 were prepared at 8:00 A.M. on Monday, how many mg remain at 10:00 A.M. on the following day? How many calories of heat are released when 20.0 10) The heat of fusion for water is 80. cal/g. g of water at 0 °C is frozen to ice? 11) How many calories are required to raise the temperature of a 150. g sample of gold from 25 °C to 175 °C? The specific heat of gold is 0.0308 callg oC