The <span>statement about ice melting that is true is that the </span><span>temperature of the ice increases as it melts. The answer is letter D. The rest of the choices do not answer the question above.</span>
Answer:
Supersaturated solution.
Explanation:
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In this case, according to the types of solution in terms of the relative amounts of solute and solvent, we can define a point called solubility at which the amount of solute is no longer dissolved in the solvent; thus, a value of solute/solvent less than the solubility is related to unsaturated solutions, equal to the solubility is related to the saturated solutions and more than the solubility to supersaturated solutions.
Thus, since solubility is temperature-dependent, at 30 °C the solubility of sodium chloride is 36.09 g per 100 mL of water; which means that, since the solution has 50 g of sodium chloride, more than 36.09 g, we infer this is a supersaturated solution.
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One side of the molecules attracted to the water and the other side to dirt grease wine etc... both of those work together to get deep down the that help remove the stain.
Answer: -
The test solution reacted with the supernatant from the test tube. In trial number 3 there was the largest amount of precipitate.
An amount of 0.019 g of precipitate was found. In trial 3, 3 mL CuSO₄ and 3 mL Na₂S was taken. Thus they were at a 1: 1 ratio.
From the fact that the most amount of precipitate was formed when the two reactants were at 1:1 ratio implies that at that ratio, all of the reactants reacted.
Thus the mole ratio of the reaction is 1 : 1.
