Given the same number of moles of each of the following substances, which one would be...

Given the same number of moles of each of the following substances, which one would be most effective in melting ice on a sidewalk? a. KCl b. CaCl2 c. MgCl2 d. (NH4)3PO4 e. NaCl

Expert Solution

queen_honey_blossom answered 2 years ago

In each of the following groups of substances, pick the one that has the given property....

In each of the following groups of substances, pick the one that has the given property. Highest boiling point: CS2, CH2Cl2, CCl4 Lowest freezing point: H2O, NH3, CH4 CH2Cl2, H2O CS2, H2O CCl4, NH3 CS2, CH4 CCl4, CH4

4. In each of the following groups of substances, circle the one that has the given...

4. In each of the following groups of substances, circle the one that has the given property. Give proof of answer and how your determined your answer (7pts each) Appreciate help for this question Highest boiling point: HBr, Kr or Cl2 Lowest freezing point: N2, CO, or CO2 . Highest boiling point: CH4, CH3CH3, or CH3CH2CH3

Does the number of moles of products increase, decrease, or remain the same when each of...

Does the number of moles of products increase, decrease, or remain the same when each of the following equilibria is subjected to an increase in pressure by decreasing the volume? 1- CO(g)+H2O(g)⇌CO2(g)+H2(g) 2- 2CO(g)⇌C(s)+CO2(g) 3- N2O4(g)⇌2NO2(g) _______________________________________________ Ethyl acetate, a solvent used in many fingernail-polish removers, is made by the reaction of acetic acid with ethanol: CH3CO2H(soln)Aceticacid +C2H5OH(soln)Ethanol⇌CH3CO2H(soln)Ethylacetate+H2O(soln)ΔH∘=−2.9kJ Part A Does the amount of ethyl acetate in an equilibrium mixture increase or decrease when the temperature is increased? increase decrease...

Determine the number of moles of the compound and determine the number of moles of each...

Determine the number of moles of the compound and determine the number of moles of each type of atom in each of the following: (a) 2.12 g of potassium bromide, KBr (b) 0.1488 g of phosphoric acid, H3PO4 (c) 23 kg of calcium carbonate, CaCO3 (d) 78.452 g of aluminum sulfate, Al2(SO4)3 (e) 0.1250 mg of caffeine, C8H10N4O2

Consider the following substances: alcohol, penicillin and rifamycin. Which of these substances would likely have the...

Consider the following substances: alcohol, penicillin and rifamycin. Which of these substances would likely have the broadest spectrum of activity against microbes? Why? Identify one downside associated with this substance and its broad-spectrum activity.

Given L={words in which the number of a’s are the same as the number of b’s}...

Given L={words in which the number of a’s are the same as the number of b’s} Write a CFG to accept L. Convert the CFG to CNF. Construct a PDA for this CNF.

Explain reasoning behind the answer Par1.A-Which one of the following substances would be the most soluble...

Explain reasoning behind the answer Par1.A-Which one of the following substances would be the most soluble in CH3OH? (a) CCl4 (b) Kr (c) HCl (d) CH3CH2OH Part 1.B-Which one of the following substances would be the most soluble in benzene (C6H6)? (a) CH3CH2OH (b) NH3 (c) NaCl (d) CCl4 Part 1.C-Which one of the following substances would be the least soluble in water? (a) Ar (b) NH3 (c) NaCl (d) CH3Cl

What is the oxidation number of carbon in each of the following substances? a) CO b)...

What is the oxidation number of carbon in each of the following substances? a) CO b) CO2 c) C2H6 d) C e) CO32- f) CH3OH

3. Imagine there are five glasses, each of which contains one of these substances. Which substance...

3. Imagine there are five glasses, each of which contains one of these substances. Which substance is a heterogeneous mixture? A) wine B) beer C) water D) salt water E) air 5.What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) × 11.900 a 1.19 × 103 b1.187 × 103 c 1.1868 × 103 d 1.18680 × 103 e 1.186799 × 103 The mass of a proton is 1.67 × 10-27...

in which one of the following substances is the kinetic energy the smallest compared to the...

in which one of the following substances is the kinetic energy the smallest compared to the intermolecular (interparticle) attractive forces? H2O(l) NaCl(s) CO2(s) CO(g) CH3OH(l)

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