- How many grams of F are in 235g of CaF2?

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Write the complex number z=(-1+sqrt(3)i)^11 in polar form: z=r(cosθ+isinθ) where r = 2048
and θ = ?
The angle should satisfy 0≤θ<2π.? Please Help, Chemistry question. The 5 Geometries? How many moles of helium are in a balloon at 755 mmhg if it has a volume of 18 l at 25c? Find all the values of the following (1) (1-sqrt(3)i)^1/3 (2) (i+1)^1/2 (3) (10i/1+i)^1/6? Updated calc question**?