Cho mình hỏi Câu 1:Tính nồng độ mol/l của các dung dịch sau:
a-Trong 100ml dung dịch có hòa tan 1,96 g H 2 SO 4
b-Dung dịch NaOH 10% có D=1,22g/ml (C M =10.D. C%/M)
c-Thêm vào nước 200 gam dung dịch HCl 3,65% để tạo thành 2 lit dung dịch.
Mình cảm ơn nhiều !!!

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.  

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.