. All final answers must have the correct number of significant figures All final answers must...
. All final answers must have the correct number of significant figures All final answers must include the correct units and direction (where appropriate) . Question 6: What is the final temperature, in degrees Celsius, of a 0.755 kg glass casserole dish if it was heated from a starting temperature of 19.4°C by 94.3 kJ of heat?
. All final answers must have the correct number of significant figures All final answers must include the correct units and direction (where appropriate) . Question 7:45.0 kg of water at 12.0°C is heated to 62.5°C in a hot water heater. Determine: a) The volume, in litres, of the water being heated (p = 1000 kg/m?) b) The amount of energy needed to heat the water (c = 4186 J/(kg:°C )] c) The cost to heat the water, if the...
. All final answers must have the correct number of significant figures All final answers must include the correct units and direction (where appropriate) . Question 5: You are cooking dinner in a 25.0 L aluminum pot. If you fill it completely full (to the brim) of 15.00°C water and heat it to 88.45°C, how many litres of water will overflow?
Find the new length of a 9.82 m copper pipe that is heated from 2.04˚C to 94.3˚C. . All final answers must have the correct number of significant figures All final answers must include the correct units and direction (where appropriate) .
must be clear and self-explanatory to receive full credit. All numerical answer must have correct number of significant figures with appropriate units. 9. (10 pts) A 0.400-kg object is swung in a circular path and in a vertical plane on a 0.500-m-length string. The angular speed at the bottom is 8.00 rad/s. (a) What is magnitude and direction of the net force on the object at the bottom? (6) What is the tension in the string when the object is...
i need help with all 4 questions Express your answer to three significant figures and include the appropriate units. Using table below, calculate the heat change needed for each of the following at the melting/freezing point Table Heats of Fusion for Selected Substances Substance Heat of fusion (J/) Propane САН. 3157 cal Benzene CH 128 Submit Previous Answers Request Answer Acetic acid CH 0 Ethanol C,H,O 100 X Incorrect; Try Again; 5 attempts remaining Ammonia NH 351 Part Water HO...
Express your answer to three significant figures and include the appropriate units. Using table below, calculate the heat change needed for each of the following at the melting/Freezing point Table Heals of Fusion for Selected Substances Substance Heat of fusion (J/) Propane САН. 3157 cal Benzene CH Submit Previous Answers Request Answer Acetic acid CHO, 192 Ethanol CHO 100 X Incorrect; Try Again; 5 attempts remaining Ammonia NH 351 Part 8 Water HO 334 joules to freeze 263 g of...
Round all answers to the correct number of significant figures. What are [H_3O^+], [OH^-], and pOH in a solution with a pH of 3.26?
B. Assorted Questions/Problems Wherever calculations are involved, show answers with appropriate number of significant figures. Include units wherever necessary. Show your work in the spaces below questions, just the final answers, even when correct, will not earn much credit. 1. At 27°C and 720 Torr, a certain gas sample has a volume of 765 mL. a. What would be its new volume if the temperature and pressure were changed to 57°C and 792 Torr? Hint: Use Combined Gas Law. b....
answers should have correct significant figures. All four questions use the equation q = MCAT 1. How much energy is absorbed by a 70.0g sample of water being heated from 18 degrees Celsius to 100 degrees Celsius, given the heat capacity of water as 4.184J per gram degrees Celsius. 2. If a 20.0g sample of gold absorbed 250.0 Joules of energy, what was the change in temperature given a heat capacity for gold as 0.129J per g degrees Celsius? 3....