Answer: B
Explanation: when coal lights it gives off heat energy
Answer:
there are 18 hydrogen atoms in 6NH³
Explanation
the 6 at the beginning of the chemical symbols states that there are 6 of each atom, but hydrogen has a superscript so it already had 3 more before that. when something like that happens you have to multiply the number by the superscript. hope this helps!
Grey seals breed in habitats where disturbance is kept to a minimal, like rocky shores, ice flows and islands. They feed on cold open waters. When pups are given birth in early winter or late autumn, their skins are white with yellowish tint. They are relatively helpless and rely on their mother's milk for the first few weeks after birth. They deposit a thick layer of blubber that will protect and allow them to adapt to the cold to sustain them when they will hunt for themselves. Hope this helps...
A.
This is the highest grade of coal and requires the greatest amount of pressure and time for formation.
