1. Determine whether or not each ion contributes to water hardness. Contributes to Water Hardness Does Not Contribute to Water Hardness Ca2+ Mg2- HCO3 Na* NO3 K* so
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- Question 1 Distillation is a physical separation and purification method that separates components based on none of the choices boiling point difference. melting point difference. difference in pH. difference in affinity to a solvent.Which of the following will show a Tyndall Effect? Select the correct response: Aqueous solution of soap at an above concentration of the surfactant. Aqueous solution of soap at below concentration of the surfactant. Aqueous solution of table salt. Aqueous solution of sugar.6-. Choose the correct answer and show the step by step solution.
- Question - Dialysis is a common technique used to change the buffer a protein sample is found in. It is performed using special bags that contain micro-pores that are bigger than the size of the protein. True or False ?Rank the salts given in the table below from least soluble to most soluble in water. Salt # Name Ksp A A93PO4 2x1018 B SFF2 8x10-10 C PbCl2 2x10-5 BaSO4 2x10-9 E CoS 5x10-22Which of the following is a false statement about permanent hardness in water?A. Permanent hardness is caused by insoluble chloride and sulphate salts of calcium and magnesium.B. Permanent hardness is removed by boiling water.C. Permanent hardness is expressed as non-alkaline hardness.D. The difference between total hardness and permanent hardness refers to temporary hardness.
- Chemistry Because the three possible unknowns (cinnamic acid, vanillin and 4- hydroxybenzaldehyde) have either carboxylic acid or phenol functional groups, they are all weak acids. • How will this weak acidity affect the freezing point depression? [Select] • What is the source of this affect? [Select] • How will the calculated molecular mass differ from the actual value? [Select] Because the three possible unknowns (cinnamic acid, vanillin and 4- hydroxybenzaldehyde) have either carboxylic acid or phenol functional groups, they are all weak acids. • How will this weak acidity affect the freezing point depression? [Select] [Select] The solution freezing point is lower than it should be. The solvent freezing point is higher than it should be. The solvent freezing point is lower than it should be. The solution freezing point is higher than it should be. value? [Select] n the actualp Plase don't provide handwritten solutionWhy must the following analysis be conducted in bodies of water? c. Total hardness
- ⁵solve with complete solution and explanationUsing a 10 mg/mL BSA protein stock solution, prepare 2 mL of a 1:10 dilution What is the concentration of this dilution?O Na Sodium phenoxide aqueous solution has a peak at 285 nm. statements is correct concerning this solution? . which ane of the following other The peak will not changed if the pH decreased The peak will exhibit red shift if the pH increased O The peak will exhibit red shift if the pH decreased The peak will exhibit blue shift if the pH increased The peak will not changed if the pH increased