od Part A Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 3150 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. How many nutrition bars should Alexandra pack? Express the number of bars numerically. View Available Hint(s) IVE ΑΣΦ S Submit Provide Feedback ? 15 of 24 bars Review I Constants I Periodic Table Next >

od Part A Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 3150 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. How many nutrition bars should Alexandra pack? Express the number of bars numerically. View Available Hint(s) IVE ΑΣΦ S Submit Provide Feedback ? 15 of 24 bars Review I Constants I Periodic Table Next >

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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If you purchase 1 bottle of 120 tablets of 650. mg sodium bicarbonate in the pharmacy aisle (the cheapest I found was $4.99), you are paying a significant amount of money for the bottling, capsuling and mark-up. You can purchase for $28.99 at www.amazon.com 30.0 pounds of sodium bicarbonate. How many bottles of tablets can you make out of the 30.0 lbs of NaHCO3 if you already have the capsules, labeling and bottles? If you are able to sell each bottle for $4.99 , once subtracting the $28.99 for the cost of the sodium bicarb, what is the gross profit before other bills?
Nitrogen forms several gaseous oxides. One of them has a density of 1.25 g/L at 720 mm Hg and 152 deg C. What is the molecular formula for this compound? Hint Solve for molar mass first! Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a NO b NO2 N20 N202 16 NO3 e Fullscreen N30 8:48 PM a 中 4/11/2021
How many kcal/mol are in 271.86 kJ/mol? Do not put units in your answer. Give your answer to two decimal places.
(CONTINUED ON NEXT PAGE) 4. Let's say that the full volume of your flask is 325 ml. You heat the flask of air in a hot water bath at 89.0°C according to your thermometer. You then inverti into the cold water bath at 5.0°C Water enters the flask as the volume of the gas shrinks. a) Theoretically, what should the volume of the gas be after it sits in the cold water bath? b) You find that during your experiment that 65.0 mL of water has entered the flask. What is the experimental volume of the gas? c) What is your percent error for this measurement?
Safari File Edit View History Bookmarks Window Help Mon Sep 28 3:13 PM session.masteringchemistry.com Test Chapter 5 Hide Timer Item 18 18 of 20 v Complete I Review I Constants I Periodic Table What is -13 °F in degrees Celsius and kelvins? Part A Express your answer using two significant figures. T = 25 °C %3D Submit Previous Answers Incorrect; correct answer withheld by instructor Part B Express your answer using three significant figures. T = 248 K %3D Submit Previous Answers Correct Provide Feedback Next > 00
10. A student reacted dilute nitric acid with lead(II) oxide to prepare lead(II) nitrate. The diagram shows the stages in the method used. 1 50 cm³ of dilute nitric acid was measured into a beaker DILUTE NITRIC ACID 3 The mixture was separated 2 Lead(II) oxide was added until all the nitric acid had reacted b. Why is the dilute nitric acid heated? heat a. Complete the boxes to identify the pieces of apparatus. 4 The solution was allowed to cool solution of -lead(II) nitrate
ce started, ne: 57 minutes, 35 seconds. Completion Status: A Moving to another question will save this response. Question 16 Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas: Mg(s) + 2 HCl(aq) MgCl2(aq) + H2(g) Suppose you need hydrogen to fill a balloon and you have 0.800 mol of magnesium and 2.00 moles of hydrochloric acid. How much hydrogen can you generate if the above reaction goes to completion? 6.00 moles 2.00 moles 0.400 moles 4.00 moles 0.800 moles 1.00 mole 6:38 PM 3/26/2020 P Type here to search hp end home ins prt sc delete (12 f9 144 f8 f7 f6 num f5 backspace lock & L. 8. {' pause
Part D Food calories D1 Name of food product Naked juice D2 Mass of food nutrients in one serving Serving size 240ml Carbohydrate 33 g, protein 2 g fat D3 Calculations for calories (cal) or kilocalories (kcal) per serving Carbohydrate protein 0 g kcal(cal) kcal (cal) kcal (cal) Fat D4 Total calories (cal or kcal) per serving kcal(cal) 140 kcal (cal) D5 Calories ( for one serving ) listed on the label D6 Percentage of total calories from carbohydrate D7 Percentage of total calories from protein D8 Percentage of total calories from fat Q4 How does your calculated number of calories in one serving compare to the calories listed on the food product nutrition label? Comment on it. % % stv 26 MacBook Air
A cylinder with a movable piston contains 2.00 gg of helium, HeHe, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2.00 LL to 3.30 LL ? (The temperature was held constant.)
Classify each as exothermic or endothermic AND explain why. N2O4(g) + 19 kcal → 2 NO2(g) H2O(g) + CO(g) → H2(g) + CO2(g) + 10 kcal
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Agar plates typically contain 1.5% agar by weight. To make 500 ml of TSA, how many grams of agar would you add to your flask before filling it with TS broth for a total volume of 500 ml? (Assume the density of TS broth is the same as H2O).