Answer:
Explanation:
See attached table.
Note that:
1 mole = 6.02x10^23
Molar mass is grams/mole. For the elements, the atomic mass is the same number as molar mass, just expressed as grams/mole.
Answer:
[1] sulphur trioxide
Explanation:
Isoelectronic species have the same number of valence electrons.
Valence electrons in nitrate (NO₃⁻):
5e- (N) + (3 x 6e-)(3xO) + 1e- (charge) = 24e-
Valence electrons in sulphur trioxide (SO₃):
6e- (S) + (3 x 6e-)(3xO) = 24e-
Valence electrons in sulphite (SO₃²⁻):
6e- (S) + (3 x 6e-)(3xO) + 2e- (charge) = 26e-
Valence electrons in phosphine (PH₃):
5e- (P) + (3 x 1e-)(3xH) = 8e-
Valence electrons in water (H₂O):
6e- (O) + (2 x 1e-)(2xH) = 8e-
Valence electrons in chlorite (ClO₂⁻):
7e- (Cl⁻) + (2 x 6e-)(2xO) + 1e- (charge) = 20e-
The only species isoelectronic with nitrate is sulphur trioxide. Both have trigonal planar geoemetry.
Explanation:
xmzfktxtosktaraitkakyssyotiatiaztitj5ia5iatos6ps
You can calculate the excess reactant by subtracting the mass of excess reagent consumed from the total mass of reagent given therefore,
The answer: Theoretical yield is 121.60 g of NH₃
Excess reactant is H₂
Rate limiting reactant is N₂
explanation: 100 g of Nitrogen
100 g of hydrogen
We are required to identify the theoretical yield of the reaction, the excess reactant and the rate limiting reagent.
We first write the equation for the reaction between nitrogen and hydrogen;
N₂ + 3H₂ → 2NH₃
From the reaction 1 mole of nitrogen reacts with 3 moles of Hydrogen gas.
Secondly we determine the moles of nitrogen gas given and hydrogen gas given;
Moles of Nitrogen gas
Moles = Mass ÷ Molar mass
Molar mass of nitrogen gas = 28.0 g/mol
Moles of Nitrogen gas = 100 g ÷ 28 g/mol 3.57 moles
Moles of Hydrogen gas
Molar mass of Hydrogen gas = 2.02 g/mol
Moles = 100 g ÷ 2.02 g/mol
= 49.50 moles
From the mole ratio given by the equation, 1 mole of nitrogen requires 3 moles of Hydrogen gas.
Thus, 3.57 moles of Nitrogen gas requires (3.57 × 3) 10.71 moles of Hydrogen gas.
This means, Nitrogen gas is the rate limiting reagent and hydrogen gas is the excess reactant.
Third calculate the theoretical yield of the reaction.
1 mole of nitrogen reacts to from 2 moles of ammonia gas
Therefore;
Moles of ammonia gas produced = Moles of nitrogen × 2
= 3.57 moles × 2
= 7.14 moles
But; molar mass of Ammonia gas is = 17.03 g/mol
Therefore;
Mass of ammonia gas produced = 7.14 moles × 17.03 g/mol
= 121.59 g
= 121.60 g
Thus, the theoretical amount of ammonia gas produced is 121.60 g
What are the answers choices?
