FOR PRACTICE 6.10 A diver breathes a heliox mixture with an oxygen mole fraction of 0.050 . What must the total pressure be for the partial pressure of oxygen to be 0.21 atm ?

Which of the following is the function of the atomiser in the emission system of Atomic Absorption Spectroscopy? To split the beam into two To break the steady light into pulsating light To break large mass of liquid into small drops To reduce the sample into atomic state

Question 1 Releasing agents are used in atomic emission spectroscopy to prevent O Cationic interference O Anionic interference Ooth anionic and cationic O Physical interference

À l'aide des documents, dire si l'eau oxygénée peut mettre en évidence une tache de sang et décrire ce que doit observer Justine si elle en applique sur la tache. S'appuyer sur des équations d'oxydoréduction pour étayer vos propos.

Design an alcohol with six carbons, where the hydroxyl group is on the third carbon.

Quanti grammi di soluto bisogna aggiungere a \( 50,0 \mathrm{~g} \) di una soluzione al \( 10,0 \% \mathrm{~m} / \mathrm{m} \) perché la sua concentrazione raddoppi?