| Rang | Matière | Problème | Problème de formatage |
|---|---|---|---|
| 3250 | Simplifier | Ha+2a | |
| 3251 | Simplifier | HBr+Mg | |
| 3252 | Simplifier | HC_2H_3O_2+NaOH | |
| 3253 | Simplifier | hc_3 | |
| 3254 | Équilibrer | 4KO_2+2H_2O+4CO_2→4KHCO_3+3O_2 | |
| 3255 | Simplifier | HCL+BrOH | |
| 3256 | Simplifier | HCl+CaCn_3CaCl_2+H_2n+Cn_2 | |
| 3257 | Simplifier | HCl+FeO | |
| 3258 | Simplifier | HCl+KOH | |
| 3259 | Simplifier | HCl+LiOH_2 | |
| 3260 | Équilibrer | 4NH_3+5O→2NO+3H_2O | |
| 3261 | Simplifier | hcl+nacl | |
| 3262 | Simplifier | HCL+NH_4OH | |
| 3263 | Simplifier | HCL_2+H_2O | |
| 3264 | Simplifier | HCL_7 | |
| 3265 | Simplifier | HClO_2+FeO_2 | |
| 3266 | Simplifier | HClO_4aq+NHaq | |
| 3267 | Simplifier | HCN+H_2O | |
| 3268 | Simplifier | HCOOH+H_2O | |
| 3269 | Simplifier | hcynf(yd)ndhf | |
| 3270 | Simplifier | He+H+Au+Kr | |
| 3271 | Simplifier | He+He | |
| 3272 | Simplifier | He+O | |
| 3273 | Simplifier | HF(aq)+H_2O | |
| 3274 | Simplifier | Hf*Ba*Np | |
| 3275 | Simplifier | Hf*(Rf) | |
| 3276 | Simplifier | Hf+Cd | |
| 3277 | Simplifier | Hf+Mn | |
| 3278 | Simplifier | Hg*6 | |
| 3279 | Simplifier | Hg+Be | |
| 3280 | Simplifier | Hg+W+Be | |
| 3281 | Simplifier | Hg_2Br_2+Cl_2HgCl_2+Br_2 | |
| 3282 | Simplifier | h(hg)gggggg | |
| 3283 | Simplifier | hhh | |
| 3284 | Simplifier | HI(aq)+H_2O(l) | |
| 3285 | Simplifier | HIO_3+Cr | |
| 3286 | Simplifier | HLa+Mn | |
| 3287 | Simplifier | HLi+Pb | |
| 3288 | Simplifier | Hm | |
| 3289 | Simplifier | HNO_3(aq)+Na_2SO(3(q)) | |
| 3290 | Simplifier | HNO_2+MgOH | |
| 3291 | Simplifier | HNO_3+H_2O | |
| 3292 | Équilibrer | 2S+3O_2→2SO_3 | |
| 3293 | Simplifier | Hs+Lv | |
| 3294 | Simplifier | Hsec(x-26 degrés ) | Hsec |
| 3295 | Simplifier | HxH | |
| 3296 | Simplifier | I+O | |
| 3297 | Simplifier | I_2+H_2 | |
| 3298 | Simplifier | iAu+Si | |
| 3299 | Simplifier | IBr+NI_3+NH_4Br | |
| 3300 | Simplifier | ICl+HIO_3+5HCl | |
| 3301 | Simplifier | If (NaCl) | If |
| 3302 | Simplifier | In*Pb | |
| 3303 | Simplifier | In+Pb | |
| 3304 | Simplifier | In+Re | |
| 3305 | Trouver les nombres d''oxydation | (NH_4)_2S | |
| 3306 | Trouver les pourcentages de masse | NaClO_3 |