Consider the balanced chemical equation that follows. you are asked to determine how many moles of water you can form from 4 moles of hydrogen and excess oxygen. 2h2(g)+o2(g)→2h2o(l) which of the following shows calculations for a correct way to solve this problem? view available hint(s) consider the balanced chemical equation that follows. you are asked to determine how many moles of water you can form from 4 moles of hydrogen and excess oxygen. which of the following shows calculations for a correct way to solve this problem? 4 mol h2×2 mol h2o2 mol h2=4 mol h2o 4 mol h2×2 mol h2o1 mol o2=8 mol h2o 2 mol h2×2 mol h22 mol h2o=2 mol h2o

The correct answer is

Explanation:

We are given:

Moles of hydrogen gas = 4 moles

As, oxygen is given in excess. Thus, is considered as an excess reagent and hydrogen is considered as a limiting reagent because it limits the formation of products.

For the given chemical equation:

By Stoichiometry of the reaction:

2 moles of hydrogen produces 2 moles of water molecule.

So, 4 moles of hydrogen will produce = of water.

Hence, the correct answer is

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.