Please help i’ll mark brainliest also which one is b pointing to and is it an animal or plant cell?

Question:

What organelle is A and B pointing?

A = Nucleus

B = Cell Membrane

Explanation:

As we can see A points at the centre of the plant cell. Which is a nucleus. And B points to the outer part of the plant cell. Which is a cell membrane.

Hopefully this answer will help you.

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

answer seismograph;