how many grams of water should be added to 21.5 Which of the following salts is
ID: 1073427 • Letter: H
Question
how many grams of water should be added to 21.5 Which of the following salts is soluble in water? a. AgCI b. AJ (NO_3)3 c. baa SO_4 d. MnO_3 e.Cu_2(PO_4)2 A substance is classified as an electrolyte. This means that a. When dissolved in water it forms ions. b. When dissolved in water it conducts electrolyte by the movement of electrons. c. When dissolved in water it conducts electrolyte by the movement of ions. d. When dissolved in water it conducts electrolyte by the movement of molecules. e. both (a) and (c) are true. Which of the following is a chemical changer? a. A dry leaf is crushed. b. A bar of copper h formed into wire. c. A block of dry ice evaporates. d. Silverware tarnishes. e. Grass is cut. A solution is a type of matter that is a. always in liquid form. b. pure and homogeneous. c. pure and heterogeneous. d. impure and homogeneous. e. impure and heterogeneous. A rectangular block has a density of 2.00 g/cm^3 and weighs 60.0 grams. if the block is 2.00 cm wide and 3.00 cm high, its length length is a. 4.00 cm b. 5.00 cm c. 6.00 cm d. something else e. some value not determinable from the information given.Explanation / Answer
88) volume of block V= m/d = 60/(2) =30 cm^3
=>l*b*h =30 =>l =30(2*3) =5cm
87) b) pure and homogeneous
86) d (All other options invlove physical processes.)
85) C ( In electrolytic solutions, it is the ions that move)
84) B
Ag+, Ba2+ are not soluble in water; MnO4 is soluble in acid not in water
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