Answer:
16.8%
Explanation:
31% NaOH molar mass 40 gm
69% H2O molar mass 18 gm
1000 gm would be
310 gm NaOH or 310/40 = 7.75 moles
690 gm of H2O or 690/18 = 38.333 moles
7.75 / (7.75 + 38.333) = .168 mole fraction
If you increase the volume the pressure will decrease. so the best answer is C
Answer:
because they change
Explanation:
It was based on theories and discoveries
Marie Curie discovered polonium and radium. Hope this helps:))) Please, mark Brainliest!
