calculate how many moles of CaCl2•2H2O are present in 1.50 g of CaCl2•2H2O and then calculate how many moles of pure CaCl2 are present in the 1.50 g of CaCl2•2H2O.

Explanation:

For this question, we have to start with the molar mass calculation of . For this, we have to know the atomic mass of each atom:

O: 16 g/mol

Cl: 35.45 g/mol

H: 1 g/mol

Ca: 40 g/mol

If we take into account the amount of each atom in the formula we will have:

So, in 1 mol of we will have 147.01 g. Now we can do the conversion:

Additionally, in 1 mol of we will have 1 mol of . Therefore, we have a 1:1 mol ratio . With this in mind, we will have the same number of moles for

I hope it helps!

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the answer is minerals.