What is the mole ratio of d to a in the generic chemical reaction? 2a+b—c+3d

The mole ratio from D to A is 3:1:1:2.

Explanation:

Chemical reaction:

A + B → C + D

Balanced chemical equation

2A + B → C + 3D

This general reaction shows that two mole of reactant A and one mole of reactant B react to form one mole of product C and three mole of product D.

Coefficient with reactants and products:

A  2

B  1

C  1

D 3

thus the mole ratio from D to A is 3:1:1:2.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b