Given the nuclear equation: 235 1 142. 91. 1
U + n—->. Ba + Kr + 3. + energy
92 0. 56. 36. 0
a State the type of nuclear reaction represented
by the equation.
b The sum of the masses of the products is
slightly less than the sum of the masses of the
reactants. Explain this loss of mass.
c This process releases greater energy than an
ordinary chemical reaction does. Name another
type of nuclear reaction that releases greater
energy than an ordinary chemical reaction.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

May someone me with these science questions

What does the symbol (–hfus) indicate in a phase change?