If the mass of br-81 is 80.9163 amu, what is the mass of br-79?

You need to prepare a solution with a specific concentration of Na+Na + ions; however, someone used the end of the stock solution of NaClNaCl, and there isn't any NaClNaCl to be found in the lab. You do, however, have some Na2SO4Na2SO4.

Sodium reacts with water according to the reaction: 2Na (s) + 2H2O (l) →2NaOH (aq) + H2 (g) Identify the oxidizing agent. a) H2O (l) b) NaOH (aq) c) Na (s) d) H2 (g)

How many protons and neutrons does aluminum

The ka of phosphoric acid, h3po4, is 7.6  10-3 at 25 °c. for the reaction h3po4 (aq) h2po4 - (aq) + h + (aq) ∆h° = - 14.2 kj/mol. what is the ka of h3po4 at 60 °c?

how many significant figure does 60600 have?

Which group of the periodic table does this element most likely belong to

What is the ph of a 7.5*10^-3 m H + solution

How many atoms of hydrogen are there in one molecule of C3H5 (OH) 3?

Transferring or sharing electrons between atoms forms

Ions that consist of a single atom are called ... ions