An element x forms an iodide (xi3­) and a chloride (xcl3). the iodide is completely converted to the chloride when it is heated in a stream of chlorine: 2xi3 3 cl2 → 2xcl3 3i2. if 0.5000 g of xi3 is treated, 0.1635 g of xcl3 is obtained. identify the element x (write down the atomic symbol for x).

The answer is the first option just took the test

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .