(a)
Interpretation:
The given compound can be cleaved using a sharp edge. The compound has to be identified based on formula or properties as ionic or molecular compound.
Concept Introduction:
Ionic compounds:
An atom or a molecule having a net electrical charge is known as ion. Charge of the electron is negative and charge of the proton is positive. Both electron and proton have the same magnitude. Positively charged ion is called cation and negatively charged ion is called anion. Because of the opposite charge of cation and anion they will readily form ionic compounds. Ion consisting of only a single atom known as monoatomic ions and more than two atoms form polyatomic ions.
Molecular compounds:
Molecular compound is formed by the combination of two or more non-metals. It is formed by the sharing of electrons. Water, hydrogen sulfide etc. are examples of molecular compounds.
(b)
Interpretation:
The given compound melts at
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The given compound
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The given compound
Concept Introduction:
Refer to part (a).
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Chapter 2 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
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- Gypsum, CaSO4 · 2 H2O, is used to manufacture cement. What is the mass percent of water in this compound?arrow_forwardA 0.709 g sample of H2C2O4·2H2O is dissolved in water and titrated to a phenolphthalein endpoint with 27.98 mL of a sodium hydroxide solution. What is the molarity of the NaOH?arrow_forwardDoes KOH (aq) + Co(CH3COO)3 (s) yield H2 gas along with potassium acetate and Cobalt(III) hydroxide? Please don't send me a generic answer...arrow_forward
- What is the molarity of each of the following solutions:(a) 15.0 g of Al2(SO4)3 in 0.250 mL solution, (b) 5.25 g ofMn(NO3)2 . 2 H2O in 175 mL of solution, (c) 35.0 mL of9.00 M H2SO4 diluted to 0.500 L?arrow_forward(a) The electrostatic force (not energy) of attraction betweentwo oppositely charged objects is given by the equationF = k(Q1Q2>d2) where k = 8.99 x 109 N-m2/C2, Q1 andQ2 are the charges of the two objects in Coulombs, and d isthe distance separating the two objects in meters. What isthe electrostatic force of attraction (in Newtons) between anelectron and a proton that are separated by 1.00 x102 pm?(b) The force of gravity acting between two objects is givenby the equation F = G(m1m2>d2), where G is the gravitationalconstant, G = 6.674 x10-11N-m2/kg2, m1 and m2 arethe masses of the two objects, and d is the distance separatingthem. What is the gravitational force of attraction (inNewtons) between the electron and proton? (c) How manytimes larger is the electrostatic force of attraction?arrow_forwardIf cobalt(II) sulfate is heated too strongly, the following reaction will occur CoSO4(s) à CoO(s) + SO3(g) If you are heating a sample of CoSO4·6H2O and this reaction occurs along withdehydration, what will happen to the experimental percent water? Explain your answer.arrow_forward
- 1) Calculate the theoretical percent water in the following hydrates. (a) chromium(III) chloride hexahydrate (b) tin(IV) chloride hexahydrate 2) If cobalt(II) sulfate is heated too strongly, the following reaction will occur CoSO4(s) à CoO(s) + SO3(g) If you are heating a sample of CoSO4·6H2O and this reaction occurs along with dehydration, what will happen to the experimental percent water? Explain your answer. 3) A 9.500 g sample of CaCl2∙xH2O after heating gives an anhydrous residue of 6.348 g. What is the value of x? 4) A 5.000 g sample that contained NaCl and BaCl2·2H2O was heated. After heating the sample had a weight of 4.688 g. What is the percent NaCl in the sample? 5) A hydrate has the following percent composition: Pb = 54.61%, C = 12.66%, H = 1.61%, O = 16.88%, and H2O = 14.24%. What is the formula of the hydrate.arrow_forwardEqual length of magnesium ribben are taken in two test tubes ‘A’ and ‘B\ H2SO4 is added to test tube ‘A’ and H2CO3 in the test tube ‘B’ in equal amounts:(a) Identify the test tube showing vigorous reaction.(b) Give reason to support your answer.(c) Name the gas liberated in both the tubes. How will you prove its liberation?(d) Write chemical equations for both reactions.(e) Out of the two acids taken above(i) which one will have lower pH value.(ii) lowerH+ concentration respectively.arrow_forwardCobalt (II) chloride hexahydrate, CoCl2 · 6H2O, is often used as a humidity indicator. This is due to the fact that the hydrate is a deep magenta color while the anhydrous form is a pale blue. As the humidity level changes, the color changes as well. What is the mass percent water in cobalt (II) hexahydrate ?arrow_forward
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