The answer is (2) KNO3. This depends on the solubility of these four compounds at 10℃. For NaCl, it is 35.8 g, For NaNO3, 80.8 g. KCl, 31.2 g. KNO3, 21.9g. So only KNO3 is less than 25.0 g.
Answer: option B. - A, B, D, E, C, H, F, G is correct using the principle of cross-cutting relationships.
The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through.
Explanation:
The full sequence of events is:
1. Layer A formed.
2. Layer B formed
3. Layer D formed.
4. Layer E formed
5. After layers A-B-D-E were present, intrusion C cut across all three.
6. Fault H formed, shifting rocks E through A and intrusion C.
7. Weathering and erosion created a layer of soil on top of layer F then G.
Answer : B) In step 2, there was a chemical change which was observed in sugar.
Explanation : In A step 2 there was a physical change that was seen. By just boiling the dissolved salt solution salt was obtained. Therefore, it is a physical change. In B step 2 there was a chemical change seen as sugar solution was thickened and turned brown. It was not obtained in its original form; there was a chemical reaction that took place during sugar evaporation. As chemical change is the one where the reaction is irreversible.
Therefore only in B step 2 there was a chemical change that was observed.
All the hydrohalic acids are equally strong because of the leveling effect.
<h3>
What is leveling effect?</h3>
- The effect of solvent on the properties of acids and bases is Leveling effect or solvent leveling
- The strength of a strong acid will be limited ("leveled") by the basicity of the solvent. Similarly, the strength of a strong base will be leveled by the acidity of the solvent.
- When a strong acid is dissolved in water, it reacts with it to form hydronium ion (H3O+).
- An example of this would be the following reaction, where "HA" is the strong acid: HA + H2O → A⁻ + H3O⁺
To learn more about hydrohalic acids: brainly.com/question/12210499
#SPJ4
