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Cars now have steering columns and front bumpers that collapse upon impact in a front-end collision. Using the kinematics of acceleration and F=ma explain why that reduces the forces on a person in the car in a front-end collision
The volume percentage of CO2 in a mixture of that gas with N2 was determined by bubbling the mixture at 1.00 atm and 25*C through a solution of 0.0100 M NaHCO3 and measuring the pH.
If 5.0 mL of . 85 M bleach solution is combined with 45.0 ml of .1 mM dye soultion at 30 degrees celcius, what will bre the therorectical concentration of dye in the reaction mixture after 60 seconds
Calculate ΔHo fusion and ΔSo fusion for the substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. ?
How many photons are there in each cubic metre near the earth"s surface at any instant ? (c) How many photons does the sun emit per second ?
Explain a sample of helium has a volume of 480 ml at 47.0 Celsius and 740 mmHg. If the temperature is lowered to 22oCelsius. And the pressure to 625 mmHg. What is the new volume
The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 359 grams of ice initially at -5°C to liquid water at 76°C
Which one of the following reactions occurring at 25 ?°C is the formation reaction of H2SO4(l) a. H2(g) + S(s) + 2O2(g) => H2SO4(l) b. H2SO4(l) => H2(g) + S(s) + 2O2(g) c. H2(g) + S(g) + 2O2(g) => H2SO4(l) d. H2SO4(l) => 2H(g) + S(s) + 4O(g) e. 2H..
On a brisk walk, a person burns about 325 Cal/h. At this rate, how many hours of brisk walking would it take to lose a pound of body fat? (See Exercise 9)
If a eukaryotic cell were broken open and the subcellular organelles separated by ultracentrifugation, in which of the following would the citric acid cycles be found
Calculate the following for an oil (MW=169g/mol) that distills during steam distillation at a boiling temperature of 98°C at 1atm of pressure. A) The mass of the oil that codistills with each one gram of water at 98°C
1. Determine the project's quality objectives with the project's stakeholders 2. Define the project's quality metrics of your project
A reaction in water causes the water in beaker to cool from 25 degrees Celsius to 21 degrees Celsius. The volume of water 150ml (d=1.0g/ml). What is the heat absorbed by the reaction?
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