A student needs 0.250 moles of iodine ('don't forget it's a BrINCIHOF - diatomic!)
for a reaction. What mass of iodine would
the student need to measure out for the
reaction
31.7 g
127 g
2549
63.5 g

63.5 g

Explanation:

Given data:

Number of moles of iodine needed = 0.250 mol

Mass to be measured = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of diatomic iodine = 253.8 g/mol

by putting values,

0.250 mol = mass / 253.8 g/mol

Mass = 0.250 mol × 253.8 g/mol

Mass = 63.5 g

Thus, student need to be measured 63.5 g of iodine.

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.