A geochemist in the field takes a 13.0 mL sample of water from a rock pool lined with crystals of a certain mineral compound X. He notes the temperature of the pool, 16.° C, and caps the sample carefully. Back in the lab, the geochemist filters the sample and then evaporates all the water under vacuum. Crystals of X are left behind. The researcher washes, dries and weighs the crystals. They weigh 0.143 g Required:
Using only the information above, can you calculate the solubility of X in water at 15°C ? If you said yes, calculate it.

The answer is YES

The value is

Explanation:

From the question we are told that

The volume of the sample taken is v = 13.0 mL

The temperature is

The mass of the sample is

Generally the solubility of the substance X is mathematically represented as

=>        

=>        

=>        

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.