What did the Curies demonstrate by studying pitchblende? Uranium is not the only radioactive element.
All elements are potentially radioactive.
Radium can cause anemia, bone and tissue damage, and death.
Uranium salts emit something that can expose photographic film.

4moles of nitrogen gas are confined to a 6.0 l vessel at 177 °c and 12.0 atm. if the vessel is allowed to expand isothermally to 36.0 l, what would be the final pressure?

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

Nan element’s square on the periodic table, the number with the greatest numerical value represents the