Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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The temperature in thermosphere can go as high as
(1500 C, 3000C, 200 C, 200 K)
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- Answer 9 and 10arrow_forwardОН Me 220 °C ОН Н Iarrow_forwardAncient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime (calcium oxide), which they produced by roasting limestone (calcium carbonate). 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (CaCO3) into solid calcium oxide and gaseous carbon dioxide. Ď 2. Suppose 20.0 L of carbon dioxide gas are produced by this reaction, at a temperature of 340.0 °C and pressure of exactly 1 atm. Calculate the mass of calcium carbonate that must have reacted. Round your answer to 3 significant digits. X Oarrow_forward
- The mass of the Earth's troposphere, the lower part of the atmosphere, is approximately 4.4*1018 kg. a) Estimate the volume of the troposphere in cubic meters at standard state (P = 1 atm, T = 298 K, R = 0.0821 atm-L/mol-k). b) The average mass of water in the troposphere is 1.3*1013 kg. Calculate the concentration of water vapour in the troposphere in mg/m3. What would the concentration of water vapour in the troposphere in ppmv be? c)arrow_forwardIli 00 Freon-12 (CF,Cl), widely used as a refrigerant and aerosol propellant, is a dangerous air pollutant. In the troposphere, it traps heat 25 times as effectively as CO2, and in the stratosphere, it participates in the breakdown of ozone. Freon-12 is prepared industrially by reaction of gaseous carbon tetrachloride with hy drogen fluoride. Hydrogen chloride gas also forms. How many grams of carbon tetrachloride are required for the production of 52.6 dm of Freon-12 at 26°C and 1.38 atm? g CCl, %24 6) (NO narrow_forwardUsing Appendix II from your book, determine the heats of reaction (DHrxn) based on the equation below: 2502(g) + O2(g) + 2H2O(1) → 2H2SO4(aq) DHrxnarrow_forward
- Make a scatter plot of temperature vs time (x-axis). Then determine the initial temp of the water inside the calorimeter, the final temperature of the water and the calorimeter and indicate the time of mixing on the plot.arrow_forwardPart a) Explain why oceanfront areas generally have smaller temperature fluctuations than inland areas. Part b) In the equation w= -P?V, why is there a negative sign?arrow_forwardcan you help me solve #2?arrow_forward
- Nonearrow_forwardYou go climbing in the Andes, and stop to make tea. You find that the water boils at a temperature of 83.9 °C. What is the atmospheric pressure where you are? (Given: ΔH°vap(H2O) = 43.4 kJ/mol) (2 decimal places)arrow_forwardThe molar heat capacity of a diatomic molecule is 29.1 J·K-1.mol-1. Assuming the atmosphere contains only nitrogen gas and there is no heat loss, calculate the total heat intake (in kilojoules) if the atmosphere warms up by 2.4°C during the next 50 years. Given that there are 1.8x1020 moles of diatomic molecules present, how many kilograms of ice (at the North and South Poles) will this quantity of heat melt at 0°C? (The molar heat of fusion of ice is 6.01 kJ·mol-1.) total heat intake 4.0M kJ mass of ice 4.0 kgarrow_forward
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