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• How do you turn two positive ions back to atoms?
  
• Do we consider that the intramolecular bond of HCl changes from covalent to ionic when it's dissolved in water?
  
• What is the covalent compound formula for calcium hydroxide?
  
• Question #690f9
  
• What basic principle of physics governs VSEPR theory?
  
• Why concentrated sulphuric acid is used as a catalyst instead of dilute sulphuric acid or a weak acid in esterification?
  
• How do cis and trans isomers arise?
  
• Can anyone help name the following hydrocarbon derivatives?
  
• How can the formation of sigma and pi bonds be explained?
  
• What is chain isomerism in relation to organic molecules?
  
• What does spectroscopy tell us?
  
• Are electron dot diagrams superior to molecular formulas?
  
• What are the components of an NMR spectrometers and how does each component work?
  
• What does ketones trace mean?
  
• Question #b63f4
  
• How many sigma and pi bonds, respectively, are in the molecule below?
  
• What are the optical isomers of amino acids?
  
• Question #1479e
  
• How do you count carbons on cycloalkanes?
  
• Why are acid anhydrides acidic?
  
• Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element
  
• Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra.Is it like this if an element has more protons than the other element it is goign to have more atomic radius therefore, it will also have more electron affinity.
  
• Question #1a6a4
  
• What chemicals are involved in the born-haber cycle?
  
• What chemicals are involved in the born-haber cycle?
  
• How is free energy change calculated?
  
• How can I explain with illustrations the cohesive forces of water molecules?
  
• How does stirring affect the rate of solution formation?
  
• How does stirring affect solvation?
  
• Question #23ae1
  
• What is the molecular formula of gold?
  
• The simplest formula for vitamin C is C3H4O3. Experimental data indicates that the molecular mass of vitamin C is about 180. What is the molecular formula of vitamin C?
  
• How do you find the electron configuration of an element?
  
• How many valence electrons does nitrogen have?
  
• Question #531fb
  
• What is the balanced chemical equation of Ca2 +H2O >C2H2 + Ca(OH)2?
  
• Why do we know that in the balanced chemical equation C + O2 ---> CO2, 1 g of C will not react exactly with 1 g of O2?
  
• Suppose 9.5 g of gaseous C2H2 reacts with excess O2 according to the reaction below. What is the mass of CO2 produced? C2H2(g) + O2(g) → CO2(g) + H2O(ℓ)
  
• Question #b741b
  
• Why is bomb calorimetry important?
  
• How is calorimetry used in the industry?
  
• How are metals named in an ionic compound?
  
• Once dynamic equilibrium is established, will it shift if additional reactants are added?
  
• What are scalar numbers?
  
• How do you calculate Gibbs free energy change?
  
• How do you calculate the Gibbs Free Energy change of a reaction?
  
• How can I calculate Gibbs Free Energy change?
  
• Question #307a5
  
• Are pi bonds stronger than sigma bonds?
  
• Why are sigma bonds stronger?
  
• Do scientists have to record all data precisely in order to follow the scientific method?
  
• How can I find the oxidation number of transition metals?
  
• Question #fcfcd
  
• Question #ede60
  
• Is SO2 a liquid, a solid, or a gas at room temperature?
  
• What is the oxidation state of chlorine in NaClO2?
  
• Question #e3756
  
• Using the VSEPR theory, what is the shape of carbon tetraiodide?
  
• Question #a2203
  
• What does the difference between the mass number and the atomic number tell us?
  
• What is mass number equal to?
  
• Question #104c0
  
• Why are closed shells more stable?
  
• What do quantitative and qualitative measurements mean in science?
  
• How can I name ionic compounds with transition metals?
  
• What is the noble gas shorthand of silicon?
  
• What is the electron configuration of the neon atom?
  
• What is the molecular formula of vinegar?
  
• Where is the charge located in a polyatomic ion?
  
• What polyatomic ion has a positive charge?
  
• What is the oxidation number for copper?
  
• What is the oxidation state of copper in #"CuSO"_4#?
  
• What are the mole ratios in the chemical equation H2+Cl2?
  
• Question #e2f35
  
• How do Van der Waals forces affect the boiling point?
  
• How does the rate of reaction affect activation energy?
  
• Question #8852c
  
• Is enthalpy of hydration always negative?
  
• How does the reaction rate change with time?
  
• Does the following reaction show an increase or decrease in entropy? KCLO3(s) ---> 2KCL(s) + 3O2(g)
  
• Does the following reaction show an increase or decrease in entropy? H2O(l) ---> H2O(s)
  
• Does the following reaction show an increase or decrease in entropy? N2(g)  +  3 H2(g)  --->  2 NH3(g)  
  
• Does heat capacity change with mass?
  
• Why is the rate of reaction slow at low temperatures?
  
• Question #7646e
  
• Is an arene the same as an aromatic compound?
  
• Does Le Chatelier's principle apply to aqueous solutions?
  
• What is the Bohr model for neon?
  
• Question #2f835
  
• How can I determine atomic size of ions?
  
• Question #2f9a7
  
• How does entropy effect enthalpy?
  
• How does enthalpy differ from heat?
  
• How are atomic spectra used?
  
• Why are orbitals described as probability maps?
  
• Why are metals ductile instead of brittle?
  
• Why are metallic bonds ductile?
  
• What is an example of a unit conversion practice problem?
  
• How do ionic and molecular compounds dissolve?
  
• What is a Hydrogen bond?
  
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