Unit 7 Knewton Exam Questions With Verified Answers.

Unit 7 Knewton Exam Questions With Verified Answers. 15 g NiO is dissolved into 600. mL. What is the molar concentration of the solution? - answer0.33 M 22 g of barium carbonate (BaCO3) is dissolved in a 800. mL solution. What is the molarity of the resulting solution? - answer0.14 M A teaspoon of table sugar contains about 0.01 mol sucrose. What is the molarity of sucrose if a teaspoon of sugar has been dissolved in a cup of tea with a volume of 200 mL? - answer0.05 M 0.10 moles of sodium sulfate is dissolved into 12 mL of solution. What is the molar concentration of the solution? - answer8.3 100. grams of ammonia (NH3) is dissolved in a 8.3 L solution. What is the molarity of the resulting solution? - answer0.71 M Compare 1 mole of Hydrogen with 1 mole of Oxygen. They will have: - answerThe same number of atoms and different masses. A mole of one element contains _______ number of atoms as a mole of another element. - answerThe same 0.60 moles of magnesium nitrate in 4.0 L of solution has a concentration of: - answer0.15 M What would be the molarity of a solution made from 86.5 g Ca(OH)2in 200.0 ml of water? - answer5.84 M An electrolyte will yield ions by undergoing a: - answerDepends on the substance How do we physically measure conductance? applying a voltage to electrodes immersed in solution measuring electrical current flow observing the brightness of a light bulb in a circuit - answerAll of the above Which of the following are characteristics of strong electrolytes? (select all that apply) They exhibit no conductivity. They produce a high concentration of ions when dissolved in water. They are insoluble in water. They exhibit high conductivity. - answerThey produce a high concentration of ions when dissolved in water. They exhibit high conductivity. Of the following, which are characteristics of weak electrolytes? (select all that apply) They produce a low concentration of ions when dissolved in water. They are soluble in water. They exhibit no conductivity. They exhibit low conductivity. - answerThey produce a low concentration of ions when dissolved in water. They are soluble in water. They exhibit low conductivity.