[PAR] [TLE] Marie Curie [SEP] Marie Skłodowska Curie ( ; ] ; ] ; 7 November 18674 July 1934; born Maria Salomea Skłodowska; ] ) was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.  She was the first woman to win a Nobel Prize, the first person and only woman to win twice, the only person to win a Nobel Prize in two different sciences, and was part of the Curie family legacy of five Nobel Prizes.  She was also the first woman to become a professor at the University of Paris, and in 1995 became the first woman to be entombed on her own merits in the Panthéon in Paris. [PAR] [TLE] Radium chloride [SEP] Radium chloride (RaCl) is a chemical compound of radium and chlorine, and the first radium compound isolated in a pure state.  Marie Curie and André-Louis Debierne used it in their original separation of radium from barium.  The first preparation of radium metal was by the electrolysis of a solution of this salt using a mercury cathode.
[PAR] [TLE] Marie Curie [ SEP ] Marie Skłodowska Curie ( ; ] ; ] ; 7 November 18674 July 1934 ; born Maria Salomea Skłodowska ; ] ) was a Polish and naturalized - French physicist and chemist who conducted pioneering research on radioactivity . She was the first woman to win a Nobel Prize , the first person and only woman to win twice , the only person to win a Nobel Prize in two different sciences , and was part of the Curie family legacy of five Nobel Prizes . She was also the first woman to become a professor at the University of Paris , and in 1995 became the first woman to be entombed on her own merits in the Panthéon in Paris . [PAR] [TLE] Radium chloride [ SEP ] Radium chloride ( RaCl ) is a chemical compound of radium and chlorine , and the first radium compound isolated in a pure state . Marie Curie and André - Louis Debierne used it in their original separation of radium from barium . The first preparation of radium metal was by the electrolysis of a solution of this salt using a mercury cathode .
What chemical compound did the first woman to win a nobel prize use to separate radium from barium?
What chemical compound did the first woman to win a nobel prize use to separate radium from barium ?
Radium chloride
Radium chloride