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1- Sigma Aldrich is a popular chemical manufacturer. Go to the website (https://www.sigmaaldrich.com/united-states.html) and search for the chemical…

1- Sigma Aldrich is a popular chemical manufacturer. Go to the website (https://www.sigmaaldrich.com/united-states.html) and search for the chemical…

1- Sigma Aldrich is a popular chemical manufacturer. Go to the website (https://www.sigmaaldrich.com/united-states.html) and search for the chemical hydrochloric acid, ACS Reagent 37%. Open the Safety Data Sheet (SDS). Use the SDS to identify the NFPA rating for HCl.Blank # 1: Health RatingBlank # 2: Fire RatingBlank # 3: Reactivity RatingQuestion 21 options:Blank # 1——-Blank # 2——–Blank # 3———2- Gases can have both mechanical and chemical hazards.TrueFalse heating a crucible over a bunsen burner. The crucible is sitting on an iron mesh gauze over the flame. How should you remove the crucible?Pick it up with paper towels and gloved hands.Pick it up at he lid.Pick it up with crucible tongs.Pick it up with your gloved hands.5-Before starting an experiment, which of the following steps should be taken?Look up and understand the chemical hazards.Review safety signs in the laboratory. Prepare hazardous waste container with the appropriate label.All of the above6- How long should you rinse your eyes after being exposed to a chemical?20 minutes5 minutes10 minutes15 minutes

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