any body doing OCR biology and chemistry?Watch
did any body remeber the genotype of the plant leaves questions?
were them AAaa,BBbb,ABab,and the new phenotype is aabb.
and the last question of that question, i write reduce cost.
the PH for the 0.02 moldm3 HCL is 1.7
and the PH for the buffer solution was 4.19 or something......
and the last question is CaC2O4 for compound Y.
and for compound X is COOH
Is that right???
were them hard?
what do think??????