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I need help with this problems to know if they have reaction or no reaction.
1) Cr(s) +Co(NO3)2 (aq).
2) Ni(s) + Li2CO3(aq)
3) Co(s) + HCl(aq)
4) Cd(s) + H2SO4(aq)?

Respuesta :

sabieerica17

Answer:

i thank its 4)

Explanation:

becuse if they have reactino or no reatino will it 4) becuse i did this

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