75. Automobile air bags inflate following a serious impact. The im- pact triggers the chemical reaction: 2 NaN3(s) → 2 Na(s) + 3 N2(8) If an automobile airbag has a volume of 11.8 L, what mass of NaN3 (in g) is required to fully inflate the airbag upon impact? Assume STP conditions.

You have a concentrated stock solution of 5 M NAOH and want to use it to produce a 300 mL solution of 3 M NaOH. What volume of water and stock solutions will you measure out to make this new solution? O a. 200 mL of water, 100 mL of NAOH stock O b. 100 mL of water, 200 mL of NaOH stock O c. 120 mL of water, 180 mL of NAOH stock d. 150 mL of water, 150 mL of NaOH stock

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Questions 3 and 4 below refer to the image above. А. В. Н.С C. Н | H-CH H-C-H H-C-H H-CH H-CH HC H нсн H-CH Н H С C-c CH₂ H H₂Nt H CH₂ H D. NaCI Question 3 Which of the substances shown above will freely interact with/dissolve in water? (Choose all that apply)