2. If you have a 16.2% by mass solution of sodium thiosulfate Na2S2O3, what mass of sodium
thiosulfate is in 80.0 g solution?

Stage in which a typical star has completely stopped fusion

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.