Iron (ii) sulfide reacts with hydrochloric acid according to the reaction: fes(s) + 2 hcl(aq)→ fecl2(s) + h2s(g) a reaction mixture initially contains 0.223 mol fes and 0.652 mol hcl. once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant is left?

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

Using the periodic table, complete the table to describe each atom. type in your answers