Answer:
B. is the answer
Explanation:
Energy in form of heat is transferred from the warmer mashed potatoes to the cooler spoon.
This is actually incorrect, the distance as stated above either from trough to trough or from crest to crest within a corresponding wave, would be referred or called as the wavelength of the given wave.
Answer:
Ca3(PO4)2- Increase in solubility
Barium hydroxide- increase in solubility
Magnesium carbonate- increase in solubility
Copper II sulphide- increase solubility
Lead II bromide- increase solubility
CuI - increase solubility
Explanation:
Calcium phosphate solubility is pH dependent. At lower pH, calcium phosphate is more soluble in water while at pH above 8.5, the solubility of calcium phosphate decreases markedly.
For Barium hydroxide and magnesium carbonate,decreasing the pH will increase the solubility of the compound.
For copper II sulphide,decreasing the pH will lead to a greater solubility. Also, lead II bromide is ordinarily insoluble in water but it's solubility increases with decreasing pH.
CuI is insoluble in water but soluble in dilute hydrochloric acid.
As a reaction proceeds the concentration of the reactants will get lower. Since reactions occur due to collisions that are in the correct orientation and lower concentrations leads to a lower amount of collisions, lower concentrations result in lower reaction rates. I hope this helps. Let me know if anything is unclear.
