2. An unused flashbulb contains magnesium and oxygen. After use, the contents are changed to magnesium oxide, but the total mass does not change. How can this observation be explained? |

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Q: ОН

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A: Given Data :

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Q: r to recrystallize as

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Q: In part 1 of this experiment you will be determining the enthalpy of vaporization of water. To do…

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Q: Complete the table below by writing the symbols for the cation and anion that make up each ionic…

A: Here we are required to find the symbol of cation and anion that would make up the ionic compound.

Q: OMe O ОН OMe O КОН, МЕОН, после како бе reflux MeO OMe MeO OH OH

A: In basic conditions -OMe group can attack the the benzene ring and can proceed in the above reaction

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A:

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Q: Rel. Intensity 100 80 60 40 20 0.0 0.0 40 MASS SPECTRUM 80 m/z 111 112 120 199 141 104 m/z 141 154…

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Q: Iron exists in nature as a mixture of predominantly three isotopes: 54 Fe (53.94 amu), 56 Fe (55.93…

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Q: 4. Determine the pre-exponential factor A from the intercept of your graph.

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A: TLC — thin layer chromatography It is used to identification and purification.

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Q: [Review Topics] Na Mg 38 48 58 68 7888 18 28 Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge…

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Q: What and how many subshells and orbitals are available in the M shell?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".