A different brand of iron tablet was analysed by titration with 0.0093 mol. L-1 potassium dichromate via the reaction listed below; Cr2O72- + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe3+ + 7H2O
In this experiment 4 tablets were crushed and dissolved in 200 cm3 of dilute acid. 25cm3 of this solution was used in the titration. The results of the titrations were as follows;

Titration
Volume dichromate (cm3)
1
33.0
2
32.05
3
32.15
4
32.10

Calculate the concentration of iron used in the titration (4 dp).

Calculate the number of moles in the original iron solution (200 cm3) (5 dp)

Calculate the mass of iron in the solution (grams, 4 dp).

Calculate the mass of iron each tablet (miligrams, 1 dp)

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.  

brian made this table to organize his notes on changes of state. depostion is a change of state that has the wrong energy change listed. it is utilized to collect data as a portion of the development means and in restricted conditions which may be applied at test.

a deposition in the authority of the united states or research for development in the authority of canada includes the catching of affirmed. the out-of-court verbal assertion of a spectator that may be lessened to a printed record for succeeding application for discovery purposes.