Why is a buffer only effective within a certain pH range? A. A buffer is only effective when the ratio of weak acid to conjugate base is 1.
B. A buffer cannot be effective in an acidic and basic pH range.
C. Buffers are destroyed outside of this range.
D. As the buffer resists pH changes its acid or base gets used up.
E. Buffers are made so that they are effective for a certain pH because chemists rarely encounter situations where a broader-range buffer is necessary.

n+h→nh3

we must remember that nitrogen and hydrogen are both diatomic molecules in their standard gas form. this adjusts the equation to

n2+h2→nh3

now we need to adjust coefficients in order to balance the atoms on each side of the equation. currently we have 2 atoms of nitrogen and 2 atoms of hydrogen on the reactant side and 1 atom of nitrogen and 3 atoms of hydrogen on the product side.

we can balance the hydrogens by placing a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen.

n2+3h2→2nh3

this gives us 6 hydrogen on each side and coincidentally the nitrogens now equal 2 on each side.

the solar system used to have much dust particles option no d

the answer is c

tell me if wrong