AcutelyGauche
AcutelyGauche AcutelyGauche
  • 24-10-2016
  • Chemistry
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Help me with 15 16 17 and 18 please thank you so much

Help me with 15 16 17 and 18 please thank you so much class=

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jadephil07 jadephil07
  • 24-10-2016
15.c
16.the law of conservation of mass state that mass in a isolated system is niether created or destroyed.
17.you can prove that dissolving salt is a physical change by evaporating the water to separate the two.
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Jonathanmiller
Jonathanmiller Jonathanmiller
  • 24-10-2016
I Know 15. Answer Is D.
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