How much of a 15.0 M stock solution do you need to prepare 250 ml of a 2.35 M HF solution?

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?

Due tomorrow which would have a lower ph, a 0.1 m solution of a strong base or a weak base? why? which would have a higher ph, a 0.1 m solution of a strong base or a weak base? why?

Complete the paragraph to describe the characteristics of a borane molecule (bh3). the lewis structure and table of electronegativities are given. the bond polarities in bh3 are , the molecular shape is , and the molecule is .