A new element is discovered and needs an atomic mass on its periodic table square. The atomic number is 120, and it has two isotopes. One isotope has 125 neutrons, and it has a percent abundance of 80%. The second isotope has 130 neutrons. What is the atomic mass that should go on the periodic table? (Enter the answer as a whole number 000)

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

Acontrol during an experiment. might change remains constant does not exist does change

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .