Choose five elements from the periodic table and arrange them according to increasing atomic radii increasing ionization energy increasing electronegativity in increasing metallic property
B, it's properly because of convection! Please, correct me if I'm wrong :>
at 70°C = 130 gram
NaCl at 100°C= 40 gram
NH₂Cl at 90°C= 70 gram
<h3>What is solubility?</h3>
Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.
Amount of a substance (called the solute) that dissolves in a unit volume of a liquid substance (called the solvent) to form a saturated solution under specified conditions of temperature and pressure. Solubility is expressed usually as moles of solute per 100 grams of solvent.
Hence,
at 70°C = 130 gram
NaCl at 100°C= 40 gram
NH₂Cl at 90°C= 70 gram
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Answer:
2.090 g
Explanation:
The chemical formula of calcium sulfate dihydrate is CaSO₄.2H₂O.
- The mass of 1 mole of CaSO₄ is 136.14 g.
- The mass of 2 moles of H₂O is 2 × 18.02 g = 36.04 g.
- The mass of 1 mole of CaSO₄.2H₂O is 136.14 g + 36.04 g = 172.18 g.
The mass ratio of CaSO₄.2H₂O to H₂O is 172.18 g:36.04 g. The mass of water lost upon the heating of 9.983 g of CaSO₄.2H₂O is:
9.983 g CaSO₄.2H₂O × (36.04 g H₂O/172.18 g CaSO₄.2H₂O) = 2.090 g H₂O