Can someone help with 10 a and b please

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

  the mississippians were considered to be  horticulturalists, which means they were

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.