How do balanced chemical equations show the conservation of mass? they show that the atoms in the products may be different than the reactants as long as the mass does not change. they show that the atoms in the products are the same as in the reactants, but the number of atoms must change. they show that the number of atoms of each element is the same in the products and

The correct answer is :'They show that the number of atoms of each element is the same in the products and reactants.'

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side that also means the number of atoms of each element must be the same on both sides of a chemical equation.

For example:

Number of hydrogen and nitrogen atoms on both the sides are equal.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.