How can the same species of fossil be found on different continents

1) Ba (CN) 2 + H2 (SO4) = H (CN) + Ba (SO4)

Where on the periodic table are the Halogens located?

Which of the following is the correct balanced equation for the reaction in which hydrogen peroxide (H2O2) is broken down into hydrogen gas and oxygen gas? A. H2O2 - - > 2H2 + O2 B. 2H2O2 - - > 2H2 + O2 C. H2O2 - - > H2 + O2 D. H2O2 - - > H2 + 2O2

Change the given word equation into balanced equation Hydrogen+Chloride=Hydrogen chloride

Which season will the northern hemisphere experience if the axis of Earth is tilted away from the sun? Select one: a. Fall b. Spring c. Summer d. Winter

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is

Which can associate a suspect's gun with a crime?

In which era did the first fish appear? a. Carboniferous b. Paleozoic C. Mesozoic d. Permian