A saturated solution of barium chloride at 30 °C contains 150 g water. How much additional barium chloride can be dissolved by heating this solution to 80 °C? 2. A solution of KCl is saturated at 20 °C.

a) How many grams of solute are dissolved in 100 g of water?

b) What is the total mass of the solution?

c) What is the mass percent of this solution at 50 °C?

d) If the solution is heated to 50 °C, how much more KCl can be dissolved in the solution without adding more water?

e) If the solution is saturated at 100 °C and then cooled to 30 °C, how many grams of solute will precipitate out?

the answer to your question is c.

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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.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.  

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