In which direction is there a net force of 200 north

positive (right)

Explanation:

During resolution of vectors, any force or particle moving towards (north or east) direction are termed positive while vectors moving towards (west and south) are negative

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

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock