Someone, please help You add 5.00 ml of 1.00 M Na2S solution to 100. ml of 0.200 M Pb(NO3)2 and see a black precipitation form. After drying, what is the mass of the precipitate?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

How are isotopes of the same element alike?