Question

Let A = [X : 2 € R, |< 1]; B = (x : T E R, (2 – 1| > 1) and AU.B=R-D, then the set D is
A) :1< X < 2
B) [x:1 < x < 2)
C) 2:1 < x < 2)
D) None of these
5.​

Answer 1

Step-by-step explanation:

In an experiment, 3.672 g of copper oxide gave, on reduction, 2.938 g of copper. What is mass of oxygen formed? What is the ratio of masses of copper and oxygen? (A) 0.634 g. 4:1 (B) 0.534 g 1:4 (C) 0.734 g 4:1 (D) 0.934 g 1:4