Read the following statements. Statement 1: Mass is conserved during the reaction.
Statement 2: Sum of mass and energy is conserved during the reaction.
Which statement is true for both nuclear reaction and chemical reaction? (1 point)
оа
Only 1
b
Only 2
ос
Both 1 and 2
Od
Neither 1 nor 2

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

pie chart because it is in percents ( % )

he would use the colour black

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.