In a synthesis reaction you start with 1.7L of Hydrogen how many liters of water will be produced?

1.7L of water

Explanation:

Given parameters:

Volume of hydrogen gas  = 1.7L

Unknown:

Volume of water produced  = ?

Solution:

To solve this problem, we can simply apply Gay - Lussac's law of combining volume.

   The law states that "when gases reacts, they do so in volumes which bear a simple ratio to one another and to the volume of the product, if gaseous provided temperature and pressure remains constant".

  A synthesis reaction is a combination reaction;

                       2H₂  +   O₂     →     2H₂O

From the balanced reaction equation;

                   2 volumes of H₂ is required to produce 2 volumes of H₂O

                   1.7L of  H₂ will produce 1.7L of  H₂O

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.