How many more neutrons would be in an isotope of sulfur-31 than a normal atom?: A. +1 B. +15 C. +16 D. -1​

-1 (D)

Explanation:

Looking at a periodic table, sulfur usually has an atomic mass of 32. It has 16 protons, so it usually has 16 neutrons.

From this isotope, it has an atomic mass of 31. It has 16 protons, so in this example there are 15 neutrons.

this means there is one less neutron than normal in this isotope.

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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; /// i do believe that the correct answer is (a) boiling