Phosphorus pentachloride reacts with water to give phosphoric acid and hydrogen chloride according to the following equation:
pcl5 + 4h20 → h3po4 + 5hci
in one experiment, 0.287 mol of pcl5 was slowly added to 3.84 mol of water.
how many grams of hcl were formed in the reaction?

52.4 grams

Explanation:

The two reactants PCl5 and H2O, must occur in a 1:4 ratio, so that tells us, that we need 4 times more H₂O than phosphorus pentachloride.

0.287 moles PCl5 multiplied by 4 equal 1.15 moles H2O. That tell sus that 1.15 moles H2O is needed.

Because we have 3.84 moles H2O, the PCL5 is the limiting reactant.

0.287 mol PCl₅ x (5 mol HCl divided by 1 mol  of PCl₅) x ( 36.5g HCl divided by moles of HCl) = 52.4 g of HCl is formed

(Hopefully this helps!)

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.