Astock solution of cu2+(aq) was prepared by placing 0.8875 g of solid cu(no3)2∙2.5 h2o in a 100.0-ml volumetric flask and diluting to the mark with water. what is the concentration (in m) of cu2+(aq)in the stock solution? molar mass of cu = 63.55 g/mol.

3.816 × 10⁻³ M

Explanation:

A stock solution of Cu²⁺(aq) was prepared by placing 0.8875 g of solid Cu(NO₃)₂∙2.5H₂O in a 100.0-mL volumetric flask and diluting to the mark with water. What is the concentration (in M) of Cu²⁺(aq)in the stock solution?

We can establish the following relations:

The moles of Cu²⁺ in 0.8875 g of Cu(NO₃)₂∙2.5H₂O are:

The molarity of Cu²⁺ is:

narendra modi is currently the pm of india

explanation:

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b