Answer:
Here's what I get
Explanation:
Each iron atom can form six coordination bonds. One of these bonds is formed between iron and oxygen.
TRUE
By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron atom.
TRUE
Molecular oxygen binds irreversibly to Fe²⁺ in heme.
False. It binds reversibly with heme.
Heme is composed of an organic protoporphyrin component and a metal atom.
TRUE
Hemoglobin and myoglobin are heterotetramers.
False. Hemoglobin is a tetramer. Myoglobin a monomeric protein.
Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
TRUE
Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.
TRUE
Answer:
1.95g of Mg(OH)2 are needed
Explanation:
Mg(OH)2 reacts with HCl as follows:
Mg(OH)2 + 2 HCl → MgCl2 + 2H2O
<em>Where 1 mole of Mg(OH)2 reacts with 2 moles of HCl</em>
To solve this question we must find the moles of acid. Then, with the chemical equation we can find the moles of Mg(OH)2 and its mass:
<em>Moles HCl:</em>
158mL = 0.158L * (0.106mol / L) = 0.01675 moles HCl
<em>Moles Mg(OH)2:</em>
0.01675 moles HCl * (2mol Mg(OH)2 / 1mol HCl) = 0.3350 moles Mg(OH)2
<em>Mass Mg(OH)2 -Molar mass: 58.3197g/mol-</em>
0.3350 moles Mg(OH)2 * (58.3197g / mol) =
<h3>1.95g of Mg(OH)2 are needed</h3>
(1) MO₂(s) + C(s) → M(s) + CO₂ (g), ΔG₁ = 288.9 kJ/mol
(2) C(s) + O₂(g) → CO₂(g), ΔG₂ = -394.4 kJ/mol
By adding both equations 1 + 2 we get the coupled reaction:
MO₂(s) + 2 C(s) + O₂(g) → M(s) + 2 CO₂(g)
ΔG⁰ = ΔG₁ + ΔG₂
= 288.9 + (-394.4) = -105.5 kJ/mol = -105500 J/mol
Temperature T = 25 + 273.15 = 298.15 K
Molar gas constant R = 8.314 J/mol.K
K =
=
= 3.05 x 10¹⁸
Answer:
We wouldn't have Coronavirus
Explanation:
