2g of a mixture hydroxide and sodium chloride as impurity were dissolved in 500 cm3 of water. If 25cm3 of this solution
were neutratred by 21 cm² of 0.1mol dm3 of hydrochloric acid,
calculate the percentage of the sodium chloride impurity.
(NaoH=40,Hcl=36.5,NACl=58.5)​

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

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)