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Since this must be true for all values of θ, and cos and sin are distinct functions, no non-zero multiple of cosθ could ever be equal to 4 sinθ for all values of θ. Therefore, the overall multiple of cosθ...

Io Feci tu Facesti egli Fecenoi Facemmovoi Facesteessi Fecero

This question is all about using the mols equation question (mols = mass/molecular weight).
It's best to break it down into steps:
1) calculate the molecular masses of the compounds that are in...

metallic compounds conduct electricity as they all share the property of having a 'sea of electrons' which means that they have free floating electrons surrounding the compound. This sea of electrons is ...

Cet hiver, ma famille et moi même, sommes allés skier dans les Alpes. Nous sommes allés pendant une semaine durant la période de Noël. Quand nous sommes arrivés à la station, mon frère et moi avons tout d...