Answer question 21 and 22 short answers monica. mnt..TOU TUDd-ons Help AccessibilityLast edit was 4 hours agoOpen SansBIUA1 1123. I.. 4The potato works because it has water in it. But the potato also but not as fast as thenormal potato because we remove the salt from it but if we add more than one potato chipit will work so fast as the normal potato.20. What did you observe about the presence of water in the potato and the potato chip?I observe that when we put the potato chip, if we leave more in the water it will swell andbecome firm.For the normal potato i think water will move from an area of less salt to moresalt more water to less water.21. What must also be present in the potato if it conducts electricity?Mix of starch and salt.22. What can you infer about whether or not the salt is dissolved in the potato and the potatochip? Explain your reasoning.23. Use your answers to Questions 19-22 to help you explain what is going on at the atomicscale so the potato conducts electricity but the chip does not. You explanation shouldinclude:The role of water in conductivityThe role of water in dissolving saltsWhy salts only conduct in certain conditionsThe role of water conductivity is a measure of the ability of water to pass an electricalcurrent. Salt is only conducted in certain conditions because it has ions in it and it can moveanywhere.THE SEARCH FOR LIFE CONTINUESScientists have identified two similar molecules as water-like candidates to search for onII

21. A potato battery is an electrochemical battery, in which chemical energy is converted to…

Answered: 21. What must also be present in the…

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter3: Statistical Tests With Excel

Section: Chapter Questions

Problem 1P

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An aqueous waste stream that has a maximum concentrationof 0.50 M H₂SO₄ (d=1.030 g/mL at 25C) will be neutralized by controlled addition of 40% caustic soda (NaOH; d=1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. However, a safety re-view finds that the waste stream could meet a small stream of animmiscible organic compound, which could form a flammable vapor in air at 40.°C. The maximum temperature of the causticsoda and the waste stream is 31°C. Could the temperature in-crease due to the heat of neutralization cause the vapor to ex-plode? Assume the specific heat capacity of each solution is 4.184 J/gK.
One way to determine the hardness of a water sample is to precipitate the calcium out of solution as a carbonate. The net ionic reaction for this precipitation is: Ca2+(aq) + CO32-(aq) → CaCO3 (s) A 1.00 L sample of water is drawn from a Phoenix, AZ well and 0.534 g of calcium carbonate is recovered using the above reaction. What was the Ca2+ concentration of the original water sample in ppm? Show your work and include units. Hint: ppm stands for parts per million, and in the case of an aqueous solution, this is equivalent to mg/L.
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1.Calculate the normality of the solutions containing 5.267g/L K2Cr2O7 (the Cr is reduced to Cr3+).(FW=294.19 g/mol) 2.A and B react as follows: A + B 2C. The equilibrium constant is 5.0 x 106. If 0.40 mol of Aand 0.70 mol of B are mixed in 1L, what are the concentrations of A, B and C after reaction? 3. The following data is given at a certain temperature:(1) 2N2 (g) + O2 (g) 2N2O (g) K1 = 1.2 x 10-35(2) N2O4 (g) 2NO2 (g) K2 = 4.6 x 10-3(3) ½N2 (g) + O2 (g) NO2 (g) K3 = 4.1 x 10-9Calculate the molar equilibrium constant, K for the reaction:2N2O (g) + 3O2 (g) 2N2O4 (g)
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21. What must also be present in the Mix of starch and salt. 22. What can you infer about whethe chip? Explain your reasoning. 23. Use your answers to Questions 1