Your microwave is broken, so you are making popcorn in a pan of hot oil on the stove (assume constant temperature). When you have 774 corn kernals left un-popped, you start counting and determine that 51 kernels pop in the next 11 seconds. When the pan reaches 40 un-popped kernals remaining, how many kernals will pop in the next 24 seconds? (Popcorn popping is a

Your microwave is broken, so you are making popcorn in a pan of hot oil on the stove (assume constant temperature). When you have 774 corn kernals left un-popped, you start counting and determine that 51 kernels pop in the next 11 seconds. When the pan reaches 40 un-popped kernals remaining, how many kernals will pop in the next 24 seconds? (Popcorn popping is a

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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A student is measuring the density of soda using a completely-filled flask of known volume. The student performing the experiment uses a sample that contains air bubbles. The student expects that this will artifically increase the calculated density of the solution. Select the answer below that is most appropriate. The student is incorrect. Air bubbles will have no effect on the calculated density of the soda. The student is incorrect. Air bubbles in the sample will cause the calculated density to decrease. The student is correct. Air bubbles in the sample will cause the calculated density to increase. The student is incorrect. Air bubbles will react with the water to form oxygen gas, which will cause the calculated density to increase. The student is incorrect. Air bubbles will react with the water to form carbon dioxide, which will cause the calculated density to increase.
You have a concentrated stock solution of 5 M NAOH and want to use it to produce a 300 mL solution of 3 M NaOH. What volume of water and stock solutions will you measure out to make this new solution? O a. 200 mL of water, 100 mL of NAOH stock O b. 100 mL of water, 200 mL of NaOH stock O c. 120 mL of water, 180 mL of NAOH stock d. 150 mL of water, 150 mL of NaOH stock
chemistry, Quicccckly please solve question 12
INSTRUCTIONS — Do not copy in Google or Bartleby. Plagarize Checker will be used — Highlight the "Key Ideas/concept" of your answer
1. Calculate the volume in milliliters of a 5.36/molL silver nitrate solution that contains 275.mmol of silver nitrate AGNO3 . Be sure your answer has the correct number of significant digits.
If 2.0 × 10-4 moles of H2O2H2O2 in 50 mL solution is consumed in 3 minutes and 25 seconds, what is the rate of consumption of H2O2H2O2? Express the rate in mol per liter·second to two significant digits.
If a water sample has 0.07 mol of calcium ions in 15 L solution, what is the water hardness level in mg/L? Pay attention to the unit. Hint: For the calcium mass , convert mol to g to mg. (1 mol calcium ion= 40.08 g/mol and 1 g = 1000 mg) Round and report your answer to an integer without decimal place. Report numeric value only, no unit. • Water hardness levels according to EPA Soft: 0-60 milligrams per liter (mg/L) as calcium carbonate Moderately hard: 61-120 mg/L as calcium carbonate • Hard: 121-180 mg/L as calcium carbonate Very hard: more than 180 mg/L as calcium carbonate
1a. Determine the volume of 1.000 g of water (Densitywater = 0.9999 g/mL). 1b. Determine the volume of 1.000 g of ice (Density ce = 0.9168 g/cm³). (1 mL = 1 cm³) %3D %3D 1c. From the volumes above, what can we conclude about 1.000 g of water when it freezes?
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Chemistry HW need help, how to do these caculation and answer these questions?
However, there are many other commercially purchased inorganic and organic compounds that people routinely used in their households (or in their everyday lives). A list of 19 chemicals with common names are written below. Find each of these items in your home or in a local grocery and take picture of the container (if you do not have access to all of them choose at least 12 of them) and then complete the table below. For #16 and 17 you choose any other house hold chemical and complete the table. • Inorganic compounds 1) table salt, 2) baking soda, 3) washing soda, 4) photographic fixer, 5) Epsom salt, 6) alum, 7) chalk, 8) corn starch, 9) sand, 10) active ingredient in toothpaste or cleansing agent and disinfectant, 11) decolorizing carbon Organic compounds Naming of organic compounds will be discussed in details in Lab 10 however there are still some simple organic compounds that you encounter at your home. Organic compounds are compounds that contain at least one carbon with one…