at the gym, you expend 210 kcal riding the stationary bicycle for 1 hour. How many...
Constants Part A bicycle with tires 64 cm in diameter travels 2.1 knm How many revolutions do the wheels make? Express your answer using two significant figures. N 318309.93 revolutio Previous Answers Request Answer Submit x icorrect; Thy Again; 3 attempts remaining Provide Feedback O Type here to search
Consider the following reaction: CH3OH(9) CO(9)+2H (9) AH = +90.7kJ AH = 130 kJ Previous Answers Correct Part For a given sample of CH,OH the enthalpy change on reaction is 185 kJ How many grams of hydrogen gas are produced? I AED ROO? Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part D What is the value of AH for the reverse of the previous reaction? AED ROO? AH. Submit Previous Answers Request Answer X Incorrect;...
Part F Calculate the energy available from hydrolysis of ATP if the ATP/ADP ratio is 5:1, the inorganic phosphate concentration is 50 mM and the temperature is 37°C? (Assume AG' = -7.3 kcal/mol for ATP hydrolysis.) Express your answer as an integer. AG' = -10100 cal/mol Submi Previous Answers Correct Part 1 Calculate the energy needed to synthesize ATP if the temperature is 25°C, and the ATP, ADP and inorganic phosphate concentrations are as in part F? (Assume AG' =-7.3...
The variable resistor (R) in the circuit in (Figure 1) is adjusted for maximum power transfer to R. Suppose that P=256 X Incorrect; Try Again: 3 attempts remaining Part 6 Figure What percentage of the total power developed in the circuit is delivered to R, found in partA? Express your answer using three significant figures. 1 of 1 V AED vec RO? % delivered = 40 160 Submit Previous Answers Request Answer 400 V 180 C 200 V X Incorrect:...
Could I get some help on this question please? Also show your work if possible and have a wonderful day! < Review of Energy and Work (Chapters 9 and 10) Problem 9.62 34 ot 38> Part A When you ride a bicycle at constant speed, nearly all the energy you expend goes into the work you do against the drag force of the air. Model a cyclist as having cross-section area 0.42 m2 and, because the human body is not...
For the reaction shown, calculate how many moles of NO, form when each amount of reactant completely reacts. 2 N,Os(9) + 4NO2(g) + O2(9) Part C 4.75 x 10' mol N205 Express your answer using three significant figures. AXO O ? % 1.02 mol Submit Previous Answers Request Answer * Incorrect; Try Again; 5 attempts remaining Part D 1.008 x 10-mol N, O, Express your answer using four significant figures. V ASD - O ? mol Submit Request Answer
Part A A centrifuge accelerates uniformly from rest to 12000 rpm in 190 s Through how many revolutions did it turn in this time? Express your answer using two significant figures. N-6.613 revolutions Submit Previ ous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback
Item 7 An 19-cm-long bicycle crank arm, with a pedal at one end, is attached to a 21-cm-diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate from 63 rpm to 92 rpm in 12 s. Part A What is the tangential acceleration of the pedal? Express your answer to two significant figures and include the appropriate units. T HẢ 5 6 = ? .005 Submit Previous Answers Request Answer X...
I need help for both questions. lem 7.4 - Enhanced - with Feedback A Review Constants How many kilocalories are required to produce 13.2 g of aluminum? e following equation shows the conversion of minum oxide (from the ore bauxite) to aluminum: 2AhO3(s) + 4Al(s) + 302 (g), AH = +801 kcal (+3350 kJ) VO AED ? kcal You may want to reference (Pages 187 - 192) Section 7 3 while completing this problem Submit Previous Answers Request Answer X...
Part A After fixing a flat tire on a bicycle you give the wheel a spin. Its initial angular speed was 6.05 rad/s and it rotated 16.2 revolutions before coming to rest. You may want to review (Pages 305-307). What was its average angular acceleration? Express your answer using three significant figures. AXO O ? a = - 1.13 rad/s2 Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B For what length of time did...