Which of the following statements about the following chemical equation is 1 point correct? *
Zn + 2HCI —— ZnF, + H,
1 The equation is correctly written because all of the elements on the reactant side are
also found on the product side.
2 The equation is NOT correctly written because all of the elements on the reactant side
are also found on the product side.
3 The equation is NOT correctly written because some of the elements on the reactant
side are NOT found on the product side.

Explanation:

Some metals react with acid and replace hydrogen from the acid.

since they are more reactive than hydrogen in the electro - chemical reactivity series.

so here Zinc is acting as reducing agent or called reductant.

and Hydrogen ion is acting as an oxidant.

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.