Cho 2 hợp chất có CTHH :Y3(PO4)2 và X(OH)3 a) Tìm hóa trị của nguyên tố X và Y.
b) Tìm 2 nguyên tố X và Y biết tổng NTK là 164đvC và hiệu NTK là 110 đvC

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.