Alkyl halides undergo reactions with brønsted-lowry bases. a is a sp² hybridized and trigonal planar and contains a vacant p orbital. all sn2 reactions proceed with attack of the nucleophile, resulting in of configuration at a stereognic center. spreading out charge by the overlap of an empty p orbital with an adjacent σ bond is called . equilibrium favors the products of nucleophilic substitution when the leaving group is a base than the nucleophile. according the to hammond postulate, the stability of the determines the rate of its formation. the formation of equal amounts of two enantiomeric products from a single starting material is called . a is an electron-rich compound, which donates a pair of electrons to an electron deficient compound, forming a covalent bond.

Alkyl halides undergo SN2 reactions with Brønsted-Lowry bases. An ethene is a sp² hybridized and trigonal planar and contains a vacant p orbital. All SN2 reactions proceed with backside attack of the nucleophile, resulting in inversion of configuration at a stereognic center. Spreading out charge by the overlap of an empty p orbital with an adjacent σ bond is called hyperconjugation . Equilibrium favors the products of nucleophilic substitution when the leaving group is a weak base than the nucleophile. According the to Hammond postulate, the stability of the enthalpy determines the rate of its formation. The formation of equal amounts of two enantiomeric products from a single starting material is called racemic mixture . A lewis base is an electron-rich compound, which donates a pair of electrons to an electron deficient compound, forming a covalent bond.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"