Why did Mendeleev leave gaps

Using a balanced chemical reaction and a periodic table, which of the following is not possible to calculate?

Match the following Column A Column B Solute a. the part of the solution that dissolves the other substance. Solvent b. the part of the solution that is being dissolved. Solution Dissolving c.

NaCl in roman numerals

You place a balloon in a closed chamber at standard temperature and pressure (STP). You double the chamber temperature while leaving the pressure constant. What happens to the balloon? A. It stays the same volume B.

Atoms with the same atomic number but different atomic mass are called A. prototypes. B. subtypes. C. isotopes. D. ions.

Which statement is true of the carbon atoms that make up a diamond? A. They can slip past one another slowly. B. They are always vibrating in place. C. They vibrate only when they are heated. D. They are locked in place and do not move at all.

A 48.3 mL sample of gas in a cylinder is warmed from 22 C, 87 C to 0.0 C what is the final temperature

Titration of 25.00 ml of an unknown hcl solution with 0.1550 m naoh starts at a buret reading for naoh of 0.33 ml. the phenolphthalein indicator turns light pink in the acid solution for over 30 seconds at a buret reading of 24.19 ml.

To what volume should you dilute 70 mL of a 10.0 MH2SO4 solution to obtain a 1.70 MH2SO4 solution?

Which agents cause both chemical and physical weathering