Write the balanced equation for the reaction of tin(iv) phospahte with sodium carbonate to make tin(iv) carbonate and sodium phosphate

Sn₃(PO₄)₄ + 6 Na₂CO₃ ⇄ 4 Na₃PO₄ + 3 Sn(CO₃)₂

Explanation:

Let's consider the double displacement reaction of tin(IV) phosphate with sodium carbonate to make tin(IV) carbonate and sodium phosphate.

Sn₃(PO₄)₄ + Na₂CO₃ ⇄ Na₃PO₄ + Sn(CO₃)₂

We start balancing the elements that are just in one compound in each side, that is, Sn, P, Na and C. From these, we start with the one with the higher atomicity (there are 4 atoms of P in the left side).

Sn₃(PO₄)₄ + Na₂CO₃ ⇄ 4 Na₃PO₄ + Sn(CO₃)₂

Now, we have to balance the sodium atoms.

Sn₃(PO₄)₄ + 6 Na₂CO₃ ⇄ 4 Na₃PO₄ + Sn(CO₃)₂

Then, we have to balance the carbon atoms.

Sn₃(PO₄)₄ + 6 Na₂CO₃ ⇄ 4 Na₃PO₄ + 3 Sn(CO₃)₂

We verify that the equation is balanced.

the answer is c.the valence of the atoms combine .

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.