Chemistry help, please!!! (1 Viewer)

[thuynguyen239]

ive trouble with these questions, can anyone help me, please!! thank you

 

[ohexploitable]

What questions?

 

[silence--]

11. B (law of conservation says mass is conserved during a chemical reaction)

4. B (isotopes have the same number of protons and a different number of neutrons)

5. B

 

[ohexploitable]

+1 to above

But Q5. is kinda bad, valency isn't +ve or -ve charge, it's combining power, it's the tendency to lose or gain electrons. Ions are +ve or -ve, not valencies.

 

[ohexploitable]

5. B

Wait... shouldn't 5. be A?

 

[annabackwards]

Wait... shouldn't 5. be A?

Correcto

 

[silence--]

err..yeah, my bad, lol :/ dunno how that happened

 

[Omnipotence]

err..yeah, my bad, lol :/ dunno how that happened

Lol, its not your day.