Question

A geochemist in the field takes a 25.0 mL sample of water from a rock pool lined with crystals of a certain mineral compound X . He notes the temperature of the pool, 15.° C , and caps the sample carefully. Back in the lab, the geochemist first dilutes the sample with distilled water to 450. mL . Then he filters it and evaporates all the water under vacuum. Crystals of X are left behind. The researcher washes, dries and weighs the crystals. They weigh 0.300 g . Using only the information above, can you calculate the solubility of X in water at 15.° C ? yesno If you said yes, calculate it. Be sure your answer has a unit symbol and 3 significant digits. ×10μ

Answer 1

Answer:

1- Yes, we can calculate the solubility of mineral compound X.

2- 0.012 g/mL.

Explanation:

1- Using only the information above, can you calculate the solubility of X in water at 15.0 °C?

The information available is:

The volume of water sample = 25.0 mL.

Weight of the mineral compound X after evaporation, drying, and washing = 0.30 g.

∴ Yes, we can calculate the solubility of mineral compound X.

2-  If you said yes, calculate it.

∵ 25.0 mL of water sample contains → 0.30 g of the mineral compound X.

∴ 1.0 mL  of water sample contains → ??? g of the mineral compound X.

1.0 ml of water sample will contain (0.3 g/25.0 mL) 0.012 g.

∴ The solubility of the mineral compound X in the water sample is 0.012 g/mL.