In the laboratory a student combines 24.7 mL of a 0.123 M magnesium nitrate solution with 12.1 mL of a 0.379 M manganese(II) nitrate solution. What is the final concentration of nitrate anion ? M

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.