• If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?*
24
1. 12
24E
25
E
2. 12
24
E
3. 14
0 1 and 2
0 1 and 3
O 2 and 3

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

its pwirhfpiwe

explanation:

because dgjpwojefopjwp