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12 Nov 2019
14. What is the minimum amount of time that you should wash your eyes out if they have been splashed with a hazardous chemical? A) 5 minuets B) 10 minutes C) 15 minuets D) 20 minutes 15. When an emergency occurs A) B) C) D) E) report the nature and location to your instructor evacuate at once without notifying anyone telephone friends in other labs move injured persons open all doors as you evacuate 16. A 0.25 M aqueous solution of potassium chloride, KCI, is tested for conductivity using the type of apparatus shown. What do you predict will happen? Bulb Plugged into wall outlet Wires B) The b tedo being B) The bulb will not light up. KCl is in the molecular form when dissolved in water. A) The bulb will not light up. KCI is a nonelectrolyte. C) D) The light bulb will shine dimly. KCl is only partially ionized in aqueous solution. The light bulb will shine brightly. KCl is highly ionized in aqueous solution. 17. When the molecules of ethanol, C.HsOH, are added to water, the ethanol molecules A) nonpolar; are attracted to the nonpolar water molecules. B) polar; form hydrogen bonds with the polar water molecules. C) polar; form covalent bonds with the polar water molecules 18. Why are no unauthorized experiments allowed in the lab A) the student lacks laboratory experience B) most professors love to only see their selected experiments performed C) the stockroom may not have the reagents or chemicals needed D) it may take more time to perform than expected E) all of the above 19. How many liters are there in a cubic centimeter? lo-siers are thene B) 10- A) 10-6 C) 103 D) 10% 20. Ideal gas equation for solution is: A) B) pv = n / RT p - Vn/RT C) D) pV = nRT p=YnR / T
14. What is the minimum amount of time that you should wash your eyes out if they have been splashed with a hazardous chemical? A) 5 minuets B) 10 minutes C) 15 minuets D) 20 minutes 15. When an emergency occurs A) B) C) D) E) report the nature and location to your instructor evacuate at once without notifying anyone telephone friends in other labs move injured persons open all doors as you evacuate 16. A 0.25 M aqueous solution of potassium chloride, KCI, is tested for conductivity using the type of apparatus shown. What do you predict will happen? Bulb Plugged into wall outlet Wires B) The b tedo being B) The bulb will not light up. KCl is in the molecular form when dissolved in water. A) The bulb will not light up. KCI is a nonelectrolyte. C) D) The light bulb will shine dimly. KCl is only partially ionized in aqueous solution. The light bulb will shine brightly. KCl is highly ionized in aqueous solution. 17. When the molecules of ethanol, C.HsOH, are added to water, the ethanol molecules A) nonpolar; are attracted to the nonpolar water molecules. B) polar; form hydrogen bonds with the polar water molecules. C) polar; form covalent bonds with the polar water molecules 18. Why are no unauthorized experiments allowed in the lab A) the student lacks laboratory experience B) most professors love to only see their selected experiments performed C) the stockroom may not have the reagents or chemicals needed D) it may take more time to perform than expected E) all of the above 19. How many liters are there in a cubic centimeter? lo-siers are thene B) 10- A) 10-6 C) 103 D) 10% 20. Ideal gas equation for solution is: A) B) pv = n / RT p - Vn/RT C) D) pV = nRT p=YnR / T
Trinidad TremblayLv2
2 Aug 2019