PLEASE HELP I WILL GIVE BRAINLIEST ANSWER!!! NO LINKS / RANDOM LETTERS I WILL REPORT U I'm doing a simple distillation lab to separate a salt water solution I need a suitable:

-source of error
- assumption
- limitation

Compare and contrast physical changes with chemical changes.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive