The temperature at state A is 20°C, that is 293 K. What is the heat (Q) for process A to D, in MJ (MegaJoules)? (Hint: What is the change in thermal energy and work done by the gas for this process?) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, is already given in the question statement. p (atm)
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- A cylinder containing 246 cubic centimeter of gas at a pressure of 101 kPa when its temperature is 526 K. Given that its temperature is unchanged when the pressure was increased by a factor of 3.9, Determine the new volume of the gas (In cubic centimeter). Note: Your answer must be in cubic centimeter, however, do not include the unit, just enter the magnitude that corresponds to the final volume in cubic centimeter. Round your answer to 2 decimal points Round your answer to 2 decimal points Answer:A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.Scientists are studying the temperature on a distant planet. They find that the surface temperature at one location is 25° Celsius. They also find that the temperature decreases by 3° Celsius for each kilometer you go up from the surface. Let T represent the temperature (in Celsius), and let H be the height above the surface (in kilometers). Write an equation relating T to H, and then graph your equation using the axes below. * T axis (y) goes up to 30 (counting by 5's) * H axis(x) goes up to 8 (counting by 1's) **Be sure to write out the points too
- 8.36 grams of a mystery substance of food with a molar mass of 149.36 g/mol is burned in a bomb calorimeter. The water in the bomb calorimeter absorbs 105,961 Joules from the burning of the substance. Calculate the heat of combustion of the mystery substance in kJ/mol. (Please input your answer as a negative number.) (DO NOT PUT UNITS IN YOUR ANSWER.) Assume that all of the heat lost by the substance is transferred to the water and no heat is lost to the surroundings.A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the output erergy, in kJ (kiloJoules)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.A hard-boiled egg removed from a pot of boiling water at 96ºC is placed in a 40ºF refrigerator to cool. Find the temperature of the egg in units of K, ºC, and ºR after the egg has attained thermal equilibrium with the refrigerator. What is the temperature change of the egg in units of ºC and K?Note: for full number of points, show all equations used to convert temperatures and report your answer with one digit to the right of the decimal point.
- This was wrong. Can you solve this again with these numbers? What is the root mean square velocity, vrms, for Hydrogen molecules (H2) at 20oC? Hint: How many amu does an H2 molecule contain. 1 amu = 1.67 x 10-27 kg Boltzman's Constant, k = 1.38 x 10-23 J/K Give your answer in m/s to 4 significant figures (NO DECIMALS)Solve with correct significant figures and units If your car gets 3.00 miles on every 1 gallon of gas, what would be its fuel efficiency in km/L?Follow Significant Figures rules and Scientific Notation for all steps of the solution just for Question 1. Question 1 Gold, which has a mass density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin leaf. If a sample of gold, with a mass of 27.63 g, is pressed into a leaf of 1.000 μm thickness, what is the area of one side of the leaf? Note: Volume of the leaf is area of one side times the thickness.
- The average life expectancy in Japan is 81 years. What is this time in SI units?0.3 Suppose the average daily metabolic rate for certain types of animals can be expressed as a function of mass by r= 120.9m where m is the mass of the animal (in kilograms) and r is the metabolic rate (in kcal per day). " dm dr dt a. If the mass of an animal is changing at a rate of find dt b. Determine for a 100-kg animal that is gaining mass at a rate of 3 kg per day. dr dt ... dr dt " dm a. If the mass of an animal is changing at a rate of dt " find dr 기 dtA cylinder measuring 7.8 cm wide and 9.4 cm high is filled with gas and the piston pushed down with a steady force. piston cylinder gas ol. Ar Calculate the force on the piston if the pressure in the gas is measured to be 192. kPa. Write your answer in units of kilonewtons. Round your answer to 2 significant digits. O kN