- Circuits Problem!!! Plz Help!!!?

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Calculate the mass of solute required to make a sodium chloride solution containing 165 g of water that has a melting point of -2.0 ∘C.? Find all degree solutions of 2sin^2 10theta + sin10 theta - 1 = 0 I can't figure out how to do this problem. Please help!? Please help me on this math problem. I asked this already, but I didn't get much help and still don't understand it.? F I wanted to arrange 8 blocks in a row, how many different arrangements can I make? What happens to the small amounts of rock in crude oil during fractional distillation?