One cup of fresh orange juice contains 118 mg of ascorbic acid (vitamin c, c6h8o6). given that one cup = 225.2 ml calculate the molarity of vitamin c in organic juice.

Answer;

The molarity of vitamin C will be; 0.002977 M or 2.977× 10^-3 M

Solution;

0.2252 L = 1 cup

118 mg of ascorbic acid = 0.118 g

1 mole of ascorbic acid = 176 g

Thus; 0.118g C6H8O6 x (1 mol C6H8O6 / 176.0g C6H8O6) / 0.2252L = 2.977x10^-3M .

=0.002977 M or 2.977× 10^-3 M

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.