Physical Science Laboratory Template (5) (1)

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Safari File Edit View History Bookmarks Window Help Mon Sep 28 3:13 PM session.masteringchemistry.com Test Chapter 5 Hide Timer Item 16 16 of 20 v Complete I Review I Constants I Periodic Table A high-protein diet contains 63.6 g of carbohydrate, 5.9 g of fat, and 140 g of protein. TABLE 3.7 Typical Energy Values for the Three Food Турes Part A How much energy, in kilocalories, does this diet provide? (Round off the kilocalories to the tens place.) Food Type kcal/g kJ/g Express your answer to two significant figures and include the appropriate units. Carbohydrate 4 17 Fat 9. 38 Protein 4 17 Submit Previous Answers Completed; correct answer withheld by instructor Part B How much energy, in kilojoules, does this diet provide? (Round off the kilojoules to the tens place.) Express your answer to three significant figures and include the appropriate units. Submit Previous Answers Completed; correct answer withheld by instructor Provide Feedback Next > 00

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For Lab 4 Energy of food content Experiment, use the following data. The specific heat (Water) is 1.00 cal/g°C. Make sure to fill up all of the Table 1, 2, 3, 4 such as your post-lab report.  a) What is Average energy content of sample (Cal/g)? b) What is Theoretical energy content of sample (Cal/g)? c) What is the Percent Error (%) of Experimental energy content of sample?

Use the References to access important values if needed for this question. In the laboratory a student finds that it takes 706 Joules to increase the temperature of 13.3 grams of liquid water from 23.0 to 36.4 degrees Celsius. The specific heat of water calculated from her data is J/g°C. Submit Answer Try Another Version 1 item attempt remaining Visited Previous Next Cengage Learning | Cengage Technical Support 10 10 MAR étv 27 MacBook Air

Review the table of energy use versus land resources below. The perpetual column refers to the same land used repeatedly for the same energy resource. One-time use means new land would be needed to provide the resource again. Reclamation refers to the restorative processes necessary to return the land to what it once was Energy Use Vs. Land Resources Acres of land Land use Electricity over 75 years (GWh) Acres of land (perpetual) per year Reclamation options (One time use) Nuclear (mining) 16.66 16.66 Coal (mining) 11.11 11.11 Biomass 0.40 18 Solar 25.00 8.33 Wind 2.90 26 Hydropower 2.50 30 According to the data, which of the following energy sources uses land least efficiently compared to its energy output? O Solar energy O Wind energy O Hydropower O Coal energy Very high cost (radioactive) Costly (<1% reclaimed) Replant trees/crops Remove or replace panels and dual use of land Remove or replace turbines and dual use of land Drain dam + restoration

Question 9 of 12 Consider a cloudless day on which the sun shines down across the United States. If 2529 kJ of energy reaches a square meter (m) of the United States in one hour, how much total solar energy reaches the entire United States per hour? The entire area of the United States is 9,158,960 km². kJ/h home end insert delete CE prt sc F10 F9 F11 F12 + num backspace lock 8. 6. %3D P. 7. 8.

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All changes saved 7. Which type of energy is not considered a traditional source of energy? O hydroelectric coal natural gas O solar energy

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Figure 40 Petroleum 30 Natural gas 20 Coal Nuclear electric 10 power Hydroelectric power Wood 1800 1825 1850 1875 1900 1925 1950 1975 2000 Year Since 1800, the main sources of energy have been fossil fuels, with other sources contributing less than 20% of the total. Chapter 3, Question 49 Your answer is incorrect. Using information in the figure above, calculate the total world energy consumption in 1975. i ! x 10 ! kJ Energy consuption by source, 108 kJ/yr

Fill in the blanks by writing the name of the definition: __________ is the energy that is transferred as a result of a temperature difference.     a. chemical energy b. electrical energy c. Nuclear energy d. Heat energy

ew History Bookmarks People Tab Window Help w G SAG e.com/document/d/1IngiVO4vZgN7zxo5WpejCwwB7RZo7jbRulXtqqucgiw/edit e A Maps neet: What is the Initial Temperature of the Hot Water ert Format Tools Add-ons Help Last edit was 7 minutes ago Normal text Times New. 12 BIUA 三 =▼三▼EE 3 4 .5 12. a. An ice-cold piece of aluminum metal is added to 50.0 g of hot water. Given the average initial temperature calculated above for the hot water, calculate the heat, q, in joules of the piece of aluminum metal if the final temperature of the water is 40.0 °C. The specific heat of water is 4.184 J/g-°C. b. Calculate the grams of aluminum metal used if the specific heat of aluminum is 0.895 J/g-°C C and the initial temperature of it is 0.0°C. 23 tv & 7 8. 9

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[please answer with correct answer] Temperature is a measure of ____

Animals do not make their own food from energy in sunlight . Do they still depend on the sun for energy?Single choice. A. No, they eat other plants or animals B. Yes, they eat plants or other animals that eat plant which use sunlight energy to make food C. Yes, animals like sitting in the sun

what would happen if a rock was exposed to energy from the sun and then millions of years later to energy from the earth's interior? you must include: energy, magma, melting, sediment, and weathering.

Choose from the types of sources of energy Fossil fuels Geothermal energy Hydrothermal energy Biomass Solar energy Wind energy Chemical energy with EXPLANATION

Part A How many kWh of energy does a 600-W toaster use in the morning if it is in operation for a total of 4.0 min ? Express your answer to two significant figures and include the appropriate units. Energy = kWh Submit Request Answer Part B At a cost of 9.0 cents/kWh, estimate how much this would add to your monthly electric energy bill if you made toast four mornings per week (16 times per month) Express your answer using two significant figures. VO AE Cost = cents/month Submit Request Answer

nermochemistry TUTOR Using Enthalpy of Vaporization I [References] Calculate the quantity of energy required to vaporize 125 mL of CH3COCH3 at 25 °C. The density of CH3COCH3 is 0.780 g/mL, and the vaporization enthalpy is 29.1 kJ/mol. kJ Submit Show Approach Show Tutor Steps Submit Answer Try Another Version 10 item attempts remaining Previous Next Show Hint Save and Ex Email Instructor