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What element has a higher melting point CaO or CS2?
CaO has a higher melting point than CS2. CaO (calcium oxide) is an ionic compound with strong electrostatic forces between its ions, resulting in a higher melting point. CS2 (carbon disulfide) is a covalent compound with weaker intermolecular forces, leading to a lower melting point.
Does CaO or CS2 have a higher melting point?
CaO (calcium oxide) has a higher melting point than CS2 (carbon disulfide). This is because CaO is an ionic compound with strong electrostatic forces between ions, while CS2 is a covalent compound with weaker intermolecular forces.
Name for CaO?
Calcium Oxide is the scientific name for CaO.
Why NaCl is very soluble but not CaO is only slightly soluble in water?
Its all to do with enthlapy and entropy. Anything which is soluble usually has a negative standard enthlapy of solution - the energy involved when 1 mole of solute dissolves in a solvent to give an infinately dilute solution. However, NaCl has a slightly positive enthalpy of solution, yet it dissolves. The reason for this is entropy - the change in the amount of disorder. When NaCl dissolves in solution, there is more chaos, more molecules within the solution. Any process that has a large positive entropy change will be favourable - spontaneous and can occur (reaction will 'go'). However, with CaO, the Ca2+ formed in solution has a high affinity (attraction to) for water molecules, hence a lot of water molecules are arranged orderly - less chaos and hence a negative entropy. This should in effect make the compound insoluble, however, the slight solubility is due to it still having a negative enthalpy change of solution - hence despite entropy it is still slightly soluble. (You may be asking how is dissolving CaO possible if entropy is negative? The entropy of the system maybe negative, but the entropy of the surroundings is positive (dissolving gives out heat - exothermic), hence the overall entropy (sum of both entropies) is positive and the reaction will 'go'.
What is the chemical compound for Calcium Oxide?
Chemical formula is CaO
What substance does not evolve heat when dissolved in water Na2SO4 NaOH CaO NaCl?
Na2SO4 and NaCl
What element has a higher melting point CaO or CS2?
CaO has a higher melting point than CS2. CaO (calcium oxide) is an ionic compound with strong electrostatic forces between its ions, resulting in a higher melting point. CS2 (carbon disulfide) is a covalent compound with weaker intermolecular forces, leading to a lower melting point.
Does CaO or CS2 have a higher melting point?
CaO (calcium oxide) has a higher melting point than CS2 (carbon disulfide). This is because CaO is an ionic compound with strong electrostatic forces between ions, while CS2 is a covalent compound with weaker intermolecular forces.
What has the author Cao Cao written?
Cao Cao has written: 'Cao Cao shi wen xuan'
Is CaO a solid?
No, because that is oxygen and calcium combined
When was Cao-Cao born?
Cao-Cao was born in 1973.
Caco3 -------- cao plus CO2 1 what is the theoretical yield of cao if 24 point 8 g of caco3 were heated 2what is the percent yield if one was able to obtain 13 point 1 g of CaO in the above proces?
Caco3 -------- CaO plus CO2 what is the theoretical yield of cao if 24 point 8 g of caco3 were heated what is the percent yield if one was able to obtain 13 point 1 g of CaO in the above proces?
How old was Cao Cao Meng De when he died?
Cao Cao died when he was sixty years old.
When did Cao Cao's invasion of Xu Province happen?
Cao Cao's invasion of Xu Province happened in 193.
What is the birth name of Francois Cao?
Francois Cao's birth name is Francois Cao.
What nicknames does Kefan Cao go by?
Kefan Cao goes by Cao Pang Zi.
How do you get cao cao in dynasty warriors 3?
To unlock Cao Cao, you must clear Musou mode with two other Wei generals
