Match the following rocks with the correct type obsidian intrusive igneous granite organic sedimentary conglomerate clastic sedimentary evaporite extrusive igneous coal metamorphic marble

Obsidian- Extrusive igneous

Granite- Intrusive igneous

Conglomerate- Clastic sedimentary

Evaporite- Chemical sedimentary

Coal- Organic sedimentary

Marble- Metamorphic

Explanation:

1) Obsidian- This rocks are volcanic glasses formed naturally because of a felsic volcanic eruption. They are generally blackish in color and are found on the earth's surface, considered as an extrusive volcanic igneous rock.

2) Granite- This rocks are formed when hot intrusive magma undergoes crystallization under the earth's surface. The minerals are coarser due to the slow rate of cooling.

3) Conglomerate- It is a clastic sedimentary rock which is comprised of comparatively larger and circular rock fragments and these fragments are attached to one another with quartz or calcitic cements, that makes the rock hard.

4) Evaporite- This are formed when the water evaporates precipitating a  certain type of mineral deposit such as the natural salt. They are considered as the chemical sedimentary rock.

5) Coal- It is an organic sedimentary rock that is formed from the ancient fossilized plants that were buried millions of years ago. They are very dark in color and are widely used to produce electricity. They are comprised of carbon compound.

6) Marble- It is a metamorphic rock, formed when calcite or dolomite rock undergoes changes due to the increasing temperature and pressure conditions.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.