- What does the "YF" in R-1234YF stand for? in regards of refrigerant and thermodynamics?

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2/8 and 3/8 of 1yard strings how much of the string left? 6 to what power = 7776 (This is 6th grade made) Please simple math.? M = p (1+i) n; p = $280, i = 0.21, n = 12? NaCl+SiO2+Fe -> ? I have a chemistry project and I don't understand how to find the product when given the reactants.? Find all numbers c that satisfy the conclusion of Rolle's Theorem. f(x)=sin(x/2), [pi/2,3pi/2]?