A 0.100 M solution of NaCIO is prepared by dissolving NaCIO in water. A 50.0 mL sample of this solution is titrated with 0.200 M HCI, K, for HCIO is 3.5 x 10 Calculate the pH of the solution at each of the following points of the titration: a. Prior to the addition of any HCI pH= b. Halfway to the equivalence point pH- c. At the equivalence point pH =

R=D51223+orr 4. Air bags are activated when a severe impact causes a steet ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3(s) 2Na(s) + 3N2(g) What mass of NaN3(s) must be reacted to inflate an air bag to 70.0 L at 25°C and 0.995atm? ***Study up on the postulates and meanings of the KMT-these problems suggest the types of calculations you can perform.

/ext/map/index.html?_con%3Dcon&external_browser%3D08launchUrl%=https%253/ Chapter 6 HW # 2 Saved 3 attempts left Check my work Be sure to answer all parts. 1 A mercury mirror forms inside a test tube as a result of the thermal decomposition of mercury(II) points oxide: 2 HgO(s) →2 Hg(!) + O2(g) AH = 181.6 kJ References (a) How much heat is needed to decompose 513 g of the oxide? kJ (b) If 607 kJ of heat is absorbed, how many grams of Hg form? x 100 g Hg (Enter your answer in scientific notation.) Mc Graw Hill < Prev 3 of 15

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Why is ground level ozone most likely to reach its highest concentrations on hot, sunny days during periods of heavy traffic in large cities?

10:05 A ull 5G Question 12 of 15 Submit Consider the following balanced chemical equation: Ca(NO3)2 (aq) + LİSO, (aq) → 2 LİNO; (aq) + CaSO, (s) If 10.0 g of Ca(NO3)2 are mixed with 10.0 g of Li,SO4, how many grams of CaSO, can be produced? A) 8.30 g B) 12.4 g C) 20.7 g D) 4.10 g Tap here or pull up for additional resources

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11. In the early study of air composition, Ramsey in 1894 separated water vapor, nitrogen, oxygen and carbon dioxide from air by absorption processes. Lord Rayleigh separated these gases by a different process. Both men were left with a small amount of gas with a density of 1.63 g/L at 25 °C and 1 atm. Which element did they discover?

Calculate how many billion years it will take to build 1 mole of a molecule with a formula of CnH2n+2 by adding 34 million atoms per second. Assume n=6 and 1 year=365 days. Use three significant figures (e.g. say 36.4 and not 36)