Why can we measure electric conductivity in our experiment for KCI and Substance 2? a) Because charged particles are present in the solution b) Because there are air bubbles in the solution which are conductive c) Because water itself is conductive d) Because Substance 2 is a potent drug

Why can we measure electric conductivity in our experiment for KCI and Substance 2? a) Because charged particles are present in the solution b) Because there are air bubbles in the solution which are conductive c) Because water itself is conductive d) Because Substance 2 is a potent drug

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter5: Chemical Bonding

Section: Chapter Questions

Problem 1E: Why is salt, NaCl, relatively harmless even though the elements that compose it, sodium and...

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ow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] Use the References to access important values if needed for this question. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to Thermometer measure the energy of a solution phase reaction. A stúdent heats 63.82 grams of silver to 99.27 °C and then drops it into a cup containing 83.16 grams of water at 24.20 °C. She measures the final temperature to be 27.20 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Water Assuming that no heat is lost to the surroundings calculate the specific heat of silver. Metal sample Specific Heat (Ag) = 1/g°C. Submit Answer Try Another Version 2 item attempts remaining Previous Next Save and Exi nt Cengage Learning | Cengage Technical Support
Describe how you could separate and purify compound A from a mixture of two neutral compounds (A and B) when A comprises 95% of the total and B the other 5% of the total. Assume that A and B have similar polarities.
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Consider these compounds: A. Ag2CO3 B. MgF2 C. Pb3(PO4)2 D. Ca3(PO4)2 Give detailed Solution with explanation needed. don't give Handwritten answer Complete the following statements by entering the letter(s) corresponding to the correct compound(s). (If more than one compound fits the description, include all the relevant compounds by writing your answer as a string of characters without punctuation, e.g, ABC.) Without doing any calculations it is possible to determine that barium phosphate is more soluble than and barium phosphate is less soluble than It is not possible to determine whether barium phosphate is more or less soluble than by simply comparing Ksp values.
ow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References) A few hydrogen and oxygen molecules are introduced into a container in the quantities depicted in the following drawing. The gases are then ignited by a spark, causing them to react and form H20. O = H O2 a Write a balanced chemical equation for the reaction. (Use the lowest possible coefficients. Omit states of matter.) b. What is the limiting reactant? O There is no limiting reactant. 02 OH, c. What is the maximum number of water molecules that can be formed in the chemical reaction? water molecules Submit Answer Try Another Version 6 item attempts remaining Previous Next Email Instructor Save and Exi Cengage Learing | Cengage Technical Support
The attractive force between two ions in Na20, Fc is 8.64x10-9N. What is the bond length a0 (in nm) given that valence of the charged Na+ is Z1=+1, for O-, is Z2 =-2, the charge of a single electron q is 0.16x10-18 C and the proportionality constant k0=9x109 V.m/C? Note that K=k0(Z1q)(Z2q) and that 1 V.C = 1 J.
(A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true but the second is false, and (D) if the first sentence is false but the second is true. 1. Water appears in nature in all three common states of matter. Water is a tasteless, odorless liquid at standard temperature and pressure. 2. The addition of salt in the distilling mixture made the water impure and saline. The addition of 5 drops of the silver nitrate solution into the distillate determines whether the distillate is impure or pure water. 3. The ideal electrical conductivity of totally pure water is 0.055 microSiemens, whereas typical deionized water has an electrical conductivity of 0.1 microSiemens. The freezing point of water at 1 atm is 100degC. 4. From the air, oxygen can slowly diffuse across the water’s surface from the surrounding atmosphere, or be mixed in quickly through aeration, whether natural or man-made. The aeration of water can be caused by wind (creating waves),…
Which of the following describes the means of electrical conduction of Zn and ZNSO4? A. Both Zn and ZNSO4 conduct electricity in the solid state. O B. Zn conducts electricity because of the metal atoms floating in a sea of electrons. O C. ZnSO4 conducts electricity when it dissociates into the ions Zn²* and SO42". O D. All of the Choices
G metals per X P Pearson Si x 2 Molecular x X OWLV2| On x OWLV2|A X My Home Assignment/takeCovalentActivity.do?locator=assignment-take (References) [Review Topics) Use the References to access Important values If needed for this question. Complete the table below for calculating the molar mass of the ionic compound silver iodide Mass of ion in one mole of silver iodide Number of Molar mass of Formula ions ion mol Cation Ag* g/mol mol Anion I g/mol Molar mass silver iodide = g/mol Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next Show Hint A 7:15 & 7 8 9. backspace %D
I have multiple questions Mixing SbCl3 and GaCl3 in a 1:1 molar ratio (using liquid sulfur dioxide as solvent) gives a solid ionic compound of empirical formu la GaSbCls. A controversy arises over whether this compou nd is (SbCl2•)(GaC l4 ) or (GaCl2•)(SbC l4"). Predict the molecular structure of the two It is learned that the cation in the compounds has a bent Basic on this fact, which formulation is more likely to be correct?==================================== Mult iply charged ions have received growing attention by the scientific community due to their interesting physical properties and their observation in many fields such as plasma chemistry, surface science, but also in interstellar chemistry, where we can find some molecules not readily observe otherwise. In this problem we will use Molecular Orbital theory to predict the stability of molecules. Consider the diatom ic Ne2 and its cation derivative, Ne2 +,…
ow.com/ilrn/takeAssignment/takeCovalentACtivity [References] A mixture consisting of 11.5 g of calcium fluoride, CaF2, and 10.1 g of sulfuric acid, H,SO4, is heated to drive off hydrogen fluoride, HF. CaF2(s) +H2SO4(1) → 2HF(g) + CaSO, (s). What is the maximum number of grams of hydrogen fluoride that can be obtained? Mass HF = Submit Answer Try Another Version 6 item attempts remaining pt Ipt 1 pr
b My Questi x Co. How to Ca x N NSU Logir X 9 PeriodicTa x M Action Rec X0 mySigTau X G 4.25 ml to X ¢ NBA Final X |G scientific c X + now.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [References] For scuba dives below 150 ft, helium is often used to replace nitrogen in the scuba tank. If 16.9 g of He(g) and 31.7 g of O2 (g) are added to a previously evacuated 4.35 L tank at 21°C, calculate the partial pressure of each gas present as well as the total pressure in the tank. Partial pressure of He = atm Partial pressure of O2 %D atm Total pressure = atm Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instuctor Save andH Exit