solve it completely please all parts. Which of the following is not a laboratory safety rule?O a. You should tie back your long hairO b. Wash your hands with water before leaving the labO c. You should never mix acids with basesO d. You should never add water to acidSuppose you touched your filter paper with wet fingers immediately before weighing it.After you collected your precipitate on the filter paper, you dried the solid and filter paperbefore obtaining the final weight. The calculated mass for the solid precipitate wouldO a. decreaseO b. not affectedO C increaseIf it takes 15 mL of 1.20 M NaOH to neutralize 90.0 ml of HCI with an unknownconcentration, what was the original concentration of the acid HCI?O a. 5.0 MOb.none of theseO c. 0.20 MO d. 7.2 MDuring the titration process if a drop of standardized NaOH adheres to the inside of thetitrand container and is never washed down into the solution. The percentage of aceticacid in vinegar sample determined wouldO a. not affectedO b. decreaseO c. increase

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Which of the following is not a laboratory safety rule? O a. You should tie back your long hair O b. Wash your hands with water before leaving the lab O. You should never mix acids with bases O d. You should never add water to acid Suppose you touched your filter paper with wet fingers immedia After you collected your precipitate on the filter paper, you dried pefore obtaining the final weight. The calculated mass for the sol O a. decrease O b. not affected O Cincrease fit takes 15 mL of 1.20 M NaOH to neutralize 90.0 mL of HCI wit concentration, what was the original concentration of the acid He O a. 5.0 M O b. none of these O .0.20 M O d. 7.2 M

Which of the following is not a laboratory safety rule? O a. You should tie back your long hair O b. Wash your hands with water before leaving the lab O. You should never mix acids with bases O d. You should never add water to acid Suppose you touched your filter paper with wet fingers immedia After you collected your precipitate on the filter paper, you dried pefore obtaining the final weight. The calculated mass for the sol O a. decrease O b. not affected O Cincrease fit takes 15 mL of 1.20 M NaOH to neutralize 90.0 mL of HCI wit concentration, what was the original concentration of the acid He O a. 5.0 M O b. none of these O .0.20 M O d. 7.2 M

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 108A: Apply Students conducted a lab to investigate limiting and excess reactants. The students added...

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In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area and CO2 was released by the reaction. Was sufficient Na2CO3 used to neutralize all of the acid?
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