gen cyanide, HCN, is a poisonous gas. The lethal dose is ximately 330 mg mg HCN per kilogram of air when d Part A Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12 x 14 x 8.0ft. The density of air at 20°C is 0.00118g/cm Express your answer using two significant figures. IVE ΑΣΦΑ m. Submit Previous Answers Request Answer X Incorrect, Try Again; 4 attempts remaining Part B the HCN is formed by reaction of NaCN with an acid such as H₂SO,, what mass of NaCN gives the lethal dose in the room 2NaCN(a)+ H₂SO,(og)-+Na, 80,(aq) + 2HCN() Express your answer using two significant figures. ma K VAX 4

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.