When iron metal reacts with sulfuric acid, it produces iron (iii) sulfate and hydrogen gas. balance the equation: fe + h2so4 → fe2(so4)3 + h2.
explain why it is necessary to balance chemical equations and why coefficients can be added to an equation, but subscripts cannot be changed

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.

Which type of volcano is shown in the image?