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Chemistry
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ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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2. What important information does the melting point of a substance provide?
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- Which statement best describes the differences in the melting temperatures (Tm) of CaO and MgO? Tm (MgO) Tm (CaO) : Stronger ionic forces due to smaller distance between the ions (size) Tm (MgO) Tm (CaO) : Stronger ionic forces due to greater ionic charges (charge product)arrow_forwardWhich phase has a fixed shape? Solid O Gas O Liquidarrow_forwardComplete the following partial ICE tables. (a) change (b) 2SO3(9) =2SO2(g) + O2(g) +x change CH4(g) + H2O=CO(g) + 3H2(g) +xarrow_forward
- 3. Explain the process of sublimation Name one substance that sublimes at room temperature and pressure.arrow_forwardWhich of these compounds has the highest melting point? O CI, O CF, O C. O CH, CBr.arrow_forwardA shiny black solid has a melting point of 114 C. It does not conduct electricity and it does not dissolve in water to form a conducting solution. The black solid is not as hard as an ionic crystal. What type of solid is this substance? Justify your answer.arrow_forward
- Dd.99.arrow_forwardPart A Which is the correct balanced chemical equation for the reaction of solid lithium with liquid water. Express your answer as a chemical equation. Identify all of the phases in your answer. 4Li(s) + 2H2O(1)–4LIH(aq) + O2(g) 2Li(s) + 2H2O(1)–→2LİOH(aq) +H2(g) O Li(s) + 2H2O(1)¬Li(OH)2(aq) + H2(g) O Li(s) + 2H20(1)¬LİH2(aq) + 20H (aq) O Li(s) + H2O(1)→LİOH(aq) +H+(aq)arrow_forwardThe melting point of calcium is 851 oC, its solid-state specific heat (Csolid) is 0.632 J/goC, and its heat of fusion (ΔHfus) is 233 J/g. How much energy, in joules, is required to melt 52.0 g of calcium at each of the following initial temperatures? a. its melting pointb. 35.0 oCc. 685 oC below its melting pointarrow_forward
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