Asample of rock from california contains 1.116g of iron and 0.48 g of oxygen.

determine the percent composition of both element in the sample.

Explanation:

Percent composition is percentage by the mass of element present in the compound.

Given , Mass of iron = 1.116 g

Mass of oxygen = 0.48 g

Total mass of the rock = 1.596 g

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.