What are the independent, controlled and dependent variables when i conduct an experiment by distilling saline.

What is the percentage of hydrogen in nitrogen trihydride

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

Which factor is likely to impact the possible number of compounds ?