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What are the adverse health and environmental effects associated with each of the following?
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Chemistry In Focus
- Why does ozone deplete severely over Antarctica each October, but not over other areas of the planet?arrow_forwardPropane, C3H8, is a hydrocarbon that is commonly used as a fuel. (a) Write a balanced equation for the complete combustion of propane gas. (b) Calculate the volume of air at 25 C and 1.00 atmosphere that is needed to completely combust 25.0 grams of propane. Assume that air is 21.0 percent O2 by volume. (Hint: we will see how to do this calculation in a later chapter on gasesfor now use the information that 1.00 L of air at 25 C and 1.00 atm contains 0.275 g of 2 per liter.) (c) The heat of combustion of propane is 2,219.2 kJ/mol. Calculate the heat of formation, Hf of propane given that Hf of H2O(l)=285.8 kJ/mol and Hf of CO2(g)=393.5 kJ/mol. (d) Assuming that all of the heat released in burning 25.0 grams of propane is transferred to 4.00 kilograms of water, calculate the increase in temperature of the water.arrow_forwardWhat is the biological importance of stratospheric ozone? Explain.arrow_forward
- Dinitrogen monoxide, N2O (commonly called nitrous oxide), is prepared by the careful decomposition of ammonium nitrate and is used as an oxidizing agent in rocket engines as well as a weak general anesthetic (where you may know it as laughing gas). However, it is also known to be a powerful greenhouse gas. In a Science magazine article, it was stated that Human activities may be causing an unprecedented rise in the terrestrial N2O source. Marine N2O production may also rise substantially as result of eutrophication, warming and ocean acidification. [L. A. Codispoti, Science, Vol. 327, pp. 1339-1340, 2010.] The powerful greenhouse gas N2O is used as a propellant in cans of instant whipped cream. (a) Draw a Lewis electron dot structure for N2O, and specify the formal charge on each atom and the molecular geometry. (b) The atom connections are NNO. Why is the connection NON not likely? The highest N2O concentration observed in the ocean is about 800 nM (nanomolar). At this concentration, what is the mass of N2O per liter?arrow_forwardThe average concentration of carbon monoxide in the air in an Ohio city in 2006 was 3.5 ppm. Calculate the number of CO molecules in 1.0L of this air pressure of 759 Torr and a temperature of 22 degrees Celsius. A.) 3.5 x 106 molecules B.) 8.7 x 1016 molecules C.) 2.1 x 1018 molecules D.) 8.9 x 1020 moleculesarrow_forwardPlease help me!! i need ur helparrow_forward
- In normal chemical storage, the element sulfur remains unreacted with oxygen in the atmosphere. However, it is impossible for sulfur and oxygen to react spontaneously to form gaseous sulfur dioxide. This is most likely to happen: A. rusting of iron B. combustion of methane C. at very low temperatures D. only in the presence of a catalyst E. oxidation of glucosearrow_forwardcan Pol x Module 21 OWLv2 Im/takeAssignment/takeCovalentActivity.do?locator=assignment-take If 9 moles of chlorine react, The reaction consumes The reaction produces Use the References to access important values if needed for this question. When chlorine reacts with water, hydrochloric acid and chloric acid (HCIO3) are produced. The balanced equation for this reaction is: 3Cl₂(g) + 3H₂O(1)→ 5HCl(aq) + HClO3(aq) Submit Answer Q Search H Z & LDL J OWLv2 | Online teaching and X b Answered: For the reaction 2 x + Retry Entire Group M moles of water. moles of hydrochloric acid and moles of chloric acid (HCIO3). fo K 9 more group attempts remaining hp f10 > NO 11 131 P 1 VS W prt se Couse ☆ ② : (Premibus Next ^GG 34 backspace lock enter 7 6:56 PM 5/14/2023 X 71 004arrow_forwardA 3.75 L sample of O2 at STP contains what mass of O2? A. 5.34 g B. 16.0 g C. 4.99 g D. 11.2 garrow_forward
- indsay High School T CMA Leamer LF Lisl. f PLI assignments for. Other Volcanoes release several different gases during eruptions. Which of these gases has been shown to cause significant COOLING of the climate for one or more years after an eruption? O A. water vapor O B. sulfur dioxide O C. carbon dioxide O D. hydrogen fluoridearrow_forwardThe temperature starts decreasing in this layer of the atmosphere as the altitude increases reaching a temperature of -100 C at a height of 80 km. A. mesosphere B. troposphere C. stratosphere D. thermospherearrow_forward[19]arrow_forward
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