Chapter 6, Problem 6P

Find the activity coefficient of Ba2+ in a solution of 2.61 mM BaCl2given that Ba2+ has an ionic size equal to 135 picometers.

Use the following table to answer the questions  Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1     Calculate the equilibrium potential for Na+, K+, Ca++, and Cl- ions?  If the resting membrane potential is -65, give the direction of the flow of Na+, Ca++, K+, and Cl- ion.  What will happen to the Cl- equilibrium potential, if one changes the extracellular chloride concentration from 560 mM to 100 mM? Give the direction of Cl- flow.  What is the effect of addition of extracellular TTX and TEA on equilibrium potential?  If one reduced the extracellular concentration of Na+ around a neuron, what would happen to the membrane potential? If one increased the extracellular concentration of K+ around a neuron, what would happen to the membrane potential?

part 1 Which of the following salts does NOT cause permanent hardness?   MgSO4   Ca(HCO3)2   CaCl2   FeCl2

Enumerate and differentiate briefly the different forms of calcium in the blood. EXPLAIN 3-5 SENTENCES

14.10)  What is the molar absorptivity of a solute that absorbs 86% of a certain wavelength of light when the beam passes through a 1.0-cm cell containing a 0.16 M solution?

What will change the value of Ksp for Ag2CO3? Group of answer choices Remove carbonate ions from the solution. Add water to the solution. Heat the solution. Add silver ions to the solution.

2. A common reagent is used to identify zinc and copper ions:A) Sodium sulideB) Potassium hexacyanoferrate (II)C) Potassium hexacyanoferrate (III)D) Ammonia solutionE) Potassium iodide

What are the steps to take to find the solution for the following problem: 1037.78 ÷ 3.2 × 0.1?

Water treatment plants must reduce phosphate levels to 3.2 micromoles PO4^3-/L before the water is considered drinkable. If water from Lake Pontchartrain is determined to have a phosphate concentration of 0.419 mg PO4^3-/L, does it meet this allowable standard for drinking water? Show your work!