A 31.0 mL sample of 0.624M perchloric acid is titrated with a 0.258M sodium hydroxide solution. What is the (H+) molarity after the addition of 15.0 mL of KOH?

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum

Which substance has non polar covalent bonds