K An oil company needs to fill orders for 91-octane gas, but only has 88- and 92-octane gas on hand. The octane rating is the percentage of isooctane in the standard fuel. How many liters of 88-octane gas should be mixed with 300 liters of 92-octane gasoline to get a mixture that is 91-octane gas? Let x be the amount of 88-octane gas used in the mixture. Complete the following chart. Type of Gas 88-octane 92-octane Mixture Quantity X 300 x+300 % Isooctane 88% 92% 91% Amount of Isooctane 0.91 (Simplify your answers. Use integers or decimals for any numbers in the expression.)

K An oil company needs to fill orders for 91-octane gas, but only has 88- and 92-octane gas on hand. The octane rating is the percentage of isooctane in the standard fuel. How many liters of 88-octane gas should be mixed with 300 liters of 92-octane gasoline to get a mixture that is 91-octane gas? Let x be the amount of 88-octane gas used in the mixture. Complete the following chart. Type of Gas 88-octane 92-octane Mixture Quantity X 300 x+300 % Isooctane 88% 92% 91% Amount of Isooctane 0.91 (Simplify your answers. Use integers or decimals for any numbers in the expression.)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

When 145 mL of 0.212 M NaCl(aq) and 145 mL of 0.212 M AgNO3(aq), both at 21.1°C, are mixed in a coffee cup calorimeter, the temperature of the mixture increases to 23.7°C as solid AgCl forms. NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq) This precipitation reaction produces 3.14 ✕ 103 J of heat, assuming no heat is absorbed by the calorimeter, no heat is exchanged between the calorimeter and its surroundings, and that the specific heat and density of the solutions are the same as those for water (4.18 J/g·°C, and 0.997 g/mL, respectively). Using this data, calculate ΔH in kJ/mol of AgNO3(aq) for the given reaction.
Hydrocarbons are compounds that contain only C and H atoms. When a hydrocarbon reacts with O2, CO2 and H2O are formed. Write a balanced equation for the combustion of the following hydrocarbon, a high-octane component of gasoline. Do not include states of matter in your answer. C6H6 (benzene)
Write “True” or “False” next to the following statements. Beaker A with 300 mL water and Beaker B with 500 mL water have same temperature so their heat energy is also same. Heat capacity of water in beaker A and in beaker B are same. Heat capacity of water in beaker A and in beaker B are different. Specific heat of water in beaker A and in beaker B are same. Specific heat of water in beaker A and in beaker B are different.
16: A neutral solution of water at a particular temperature has a concentration of OH of 3.0 x 107 M. What is Kw at this temperature? F2 20 F3 Q F5 F6 K F7 F8 F9 1 4 7 +/- 2 5 F10 8 3 6 9 0 X
Try Again Row 3: Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). First, a 7.000 g tablet of benzoic acid (CH₂CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 15.00 °C to 53.26 °C over a time of 12.3 minutes. Next, 5.420 g of acetylene (C₂H₂) are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 15.00 °C to 74.42 °C. Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…
When 3.02 g of NHẠCI is dissolved in enough water to make 20.05 mL of solution, the temperature dropped from 19.8°C to 9.1°C. Calculate the enthalpy change (in kJ) when 1 mole of NH4CI is dissolved in water. The density and specific heat of water are 1.00 g/mL and 4.18 J/g°C respectively. Type your numeric answer and submit
2- Find the relationship between kcal and kJ and convert the energy values found in (1) to kJ.
ity College-CHM 101 (Section 90) - Spring20 - MARX > Activities and Due Dates > Ch 7 HW O Assignment Score: O Resources Ly Give Up? 50.1% O Hint Check Answer < Question 16 of 28 The combustion of ethane (C,H.) produces carbon dioxide and steam. 2 C,H,(s) +70,(g) → 4 CO,(g) + 6 H, O(g) How many moles of CO, are produced when 5.05 mol of ethane is burned in an excess of oxygen? moles of CO,: mol terms of use contactus help about us carecrs privacy policy MacBook A
50 g of solid sodium hydroxide is dissolved in 175 mL of water. Using a coffee-cup calorimeter, the temperature change of the water is measured to be -2.1°C. Which equation best describes this system? NaOH(s)→NaOH(aq) + kJ NaOH(s)+ kJ →NaOH(aq) NaOH(s)→NaOH(l) + kJ NaOH(aq)→NaOH(s) + kJ NaOH(aq)+ kJ →NaOH(s) NaOH(l)+ kJ → NaOH(s) What is the definition of the temperature of a substance? the speed of the slowest particles in the substance, subtracted from the speed of the fastest particles. the heat capacity of the substance times its mass a measure of the average kinetic energy of a system the total heat content of a substance the speed of the fastest particles in the substance Which statement describes an endothermic reaction? The surroundings warm up. The system releases energy. The potential energy of the products is less…
1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? 2. A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the temperature of the surrounding solution increase or decrease as a result of this chemical process? 3. If you hold 3 grams of ice in your hand at room temperature, your hand will become cold. a) Is the reaction H,O(s) – H,O(1) endothermic or exothermic? b) In which direction does heat flow?