Na2o + hcl -> nacl + h2o does this equation satisfy the law of conservation of matter? why or why not? a) yes, since there are 5 reactant atoms and 5 product atoms. eliminate b) yes, since there is a subscript of 2 on both sides on the equation. c) no, since there are two sodium atoms as reactants, but only one sodium atom as a product. d) no, since there is a liquid and a solid as reactants, but a gas and a solid as a product

Na2O  + HCl→ NaCl  +H2O

Does  the equation  above  satisfy  the law  of mass  conservation   of matter.

No, since  there  are two sodium atoms as  reactants,  but  only   one sodium  atom as a  product.

Explanation

According  to the law of mass conservation  the  number of atoms in the reactant  side  must be equal  to  the   number of atoms in the  product side.

For  this  reason the equation above does  not satisfy the law of mass  conservation  since the  number of sodium  atoms  are  not equal  in both side.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.