Answer:-
4.765 grams
Explanation:-
Molecular weight of Hydrogen gas H2 = 1 x 2 = 2 gram
Molecular weight of NH3 = 14 x 1 + 1 x 3 = 17 gram
The balanced chemical equation for the reaction is
N2 + 3 H2 --> 2 NH3
From the chemical equation we see
To produce 2 NH3 we need 3 H2 to react.
∴ To produce 2 x 17 grams of NH3 we need 3 x 2 grams of H2 to react.
To produce 27 grams of NH3 we need (3 x 2) x 27 / (2 x 17) grams of H2 to react
=4.765 grams of H2 to react
Answer:
The minimum concentration of K₂CO₃ is (1.5 x 10⁻⁹ M) that is required to cause the the precipitation of FeCO₃ firstly.
Explanation:
- Firstly, we should know that the precipitate is formed when the ionic product of the ions is higher than the solubility product.
FeCO₃ is formed when: [Fe²⁺][CO₃⁻²] > Ksp of FeCO₃.
MgCO₃ is formed when: [Mg²⁺][CO₃⁻²] > Ksp of MgCO₃.
<u><em>1) For FeCO₃:</em></u>
∵ Ksp (FeCO₃) = [Fe²⁺][CO₃⁻²]
(3.07 × 10⁻¹¹) = (2.0 × 10²⁻)[CO₃⁻²]
∴ [CO₃⁻²] = (3.07 × 10⁻¹¹)/(2.0 × 10²⁻) = 1.5 x 10⁻⁹ M.
<u><em>2) For MgCO₃:</em></u>
∵ Ksp (MgCO₃) = [Mg²⁺][CO₃⁻²]
(6.82 × 10⁻⁶) = (1.8 × 10²⁻)[CO₃⁻²]
∴ [CO₃⁻²] = (6.82 × 10⁻⁶)/(1.8 × 10²⁻) = 3.8 x 10⁻⁴ M.
The concentration of K₂CO₃ is (1.5 x 10⁻⁹ M) that is required to cause the the precipitation of FeCO₃ is much less than the concentration of K₂CO₃ (3.8 x 10⁻⁴ M) that is required to cause the the precipitation of MgCO₃.
<em>So, The minimum concentration of K₂CO₃ is (1.5 x 10⁻⁹ M) that is required to cause the the precipitation of FeCO₃ firstly.</em>
Answer:
B. The high temperature will increase the rate of the reactant-favored
reaction at equilibrium.
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silver oxide
Silver oxide is the chemical compound with the formula Ag₂O. It is a fine black or dark brown powder that is used to prepare other silver compounds
There are 2 electrons in the overlapping region.
Chlorine is the second member of the halogen group which are form of family of elements that resemble one another very closely.
The electronic configuration of chlorine shows the arrangement of chlorine electrons within it's atom.
At the outer most shell of the atom is seven electrons, therefore requires only one electron each to attain the octet arrangement.
The overlapping of the orbitals indicates the chemical bond formed by sharing of electrons between atoms called covalent bonding.
To complete it's outer most shell, it will need to share electron with another chlorine atom.
Therefore, there are 2 electrons in the overlapping region.
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