Can someone help me w thiss ? would really appreciate it :) What is observed when ammonia reacts with
a- aluminium ions.
b- Calcium ions.
c- Zinc ions.

Compare and contrast physical changes with chemical changes.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit