9. Liquid oxygen rocket fuel is stored at 90 K. What is this temperature in "F?...
1) Explain the meaning of absolute zero on the Kelvin scale: a. is the freezing point of water b. gas molecules quit moving at this temperature c. is a practical limit, theory allows lower d. heat can flow from an object at this temperature 2) What characteristic of water makes it ideal as a practical engine coolant? a. highest specific heat b. lowest specific heat c, highest boiling point d. lowest freezing point 3) A piston has an area of...
Liquid oxygen rocket fuel is stored at 90 k. What is this temperature in F?
Consider a rocket engine using ethyl alcohol (ethanol), C2H,OH as fuel and oxygen, O2, as oxidizer. Ethyl alcohol and oxygen enter the chamber as, respectively, a liquid at temperature T,C2H5OH = T,-29 8.1 5 K and a gas at temperature to2 =-40°C. The combustion reaction is o.0 where Alco , Aco2 , M2 , 20 arethe mole fractions of the products. The table below shows the mole fractions of the combustion products and their average specific heats and heats of...
3) Methylhydrazone, CH6N2, is commonly used as rocket fuel. When 3.71g of methylhydrazine is combusted in a "bomb" calorimeter containing 1500g of water, the temperature rose from 25.0°C to 39.5°C. If the reaction produces 1.30 x 103kJ/mol CH6N2, what is the heat capacity of the calorimeter? Specific heat capacity of water is 4.184J/g °C CHN2() 5 O2(g) 2 N2(g) 2 CO2(g) 6 H2O(l) d) 3200J/oC b) 950J/oC e) 5400J/oC a) 500J/oC c) 1500J/oC
Q3. (I) A certain car has 14.0 L of liquid coolant circulating at a temperature of 93°C through the engine's cooling system. Assume that, in this normal condition, the coolant completely fills the 3.5-L volume of the aluminum radiator and the 10.5-L internal cavities within the aluminum engine When a car overheats, the radiator, engine, and coolant expand and a small reservoir connected to the radiator catches any resultant coolant overflow. Estimate how much coolant overflows to the reservoir if...
If. How many calories are required to change the temperature of 1003 g of gold from 23.5 °C to 85.0°C? The specific heat of ethanol is 0.1256 J/g"C. A. 1350 cal B. 3300 cal C. 6750 cal D. 1850 cal E. 7750 cal 19. Which is NOT a physical property of matters? A. Boiling Point B. Combustibility C. Specific Heat Capacity D. Solubility E. Density Ih. What is the charge on Pd atom in Pd(NO2)2? A. Pd+ B. Pd+ C....
1. What effects can heat transfer have on H2O, if no chemical reactions occur? a) At 0°C, the temperature of the water in an ice-water mix may increase, or the temperature of the ice in the ice-water mix may decrease. b) Either the temperature of the water will change or the phase will change, but not both at the same time. c) At 0°C, ice will expand as it turns into liquid water. d) None of the above. 2. Which...
Please do all :) A mass M of solid metal at temperature T is put into 3.0kg of water which is initially at 90°C. The metal and water are placed in an insulated container The specific heat for water is 4186K of 60°C. The latent heat associated with the solid-liquid transition of the metal is 7.5 x 10. The specific heat for the metal is 600 in the solid phase and 400% in the liquid phase The metal has a...
3. Nitrogen gas is stored at a temperature of 200 K and a specific volume of 0,004 m3/kg. Determine the pressure on the basis of (a) the ideal gas equation of state (b) assuming a real gas behavior with the compressibility factor 0.8 (c) the van der Waals equation of state (Hint: Critical point properties of Nitrogen from Table A-1 (page 882) are: R=0.2968 kJ/kg, To - 126.2 k, P. - 3.39 Mpa. Using these values, a. 27R'T/64P,-0.175 m.kPa/kg?bRT/8P -...
13,16,19 1. Which unit of measure represents the greater change amount of temperature change: Fahremheit or Celsius EXPLAIN YOUR ANSWER in a few words. 14 A) Convert 42 degC to degF. B) At what temperature, if any, do the Fahremheit and Celsius scales read the same number? 15. 180 dęgF to Kelvin degrees 80'F-32)xA+213.15:355.372K 16. Given a temperature of so degC, what would be the new temperature in degC if the temperature of the material were to triple? 17. How...