mobslayer88
15.07.2020 •
Chemistry
Classify each of the following as a molecular, an ionic, a network, or a metallic solid by matching a substance on the left with a description on the right. Clear All dry ice (CO2) lime (CaO) gold bar (Au) sand (SiO2) Molecular Ionic Network Metallic
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Ответ:
Sand - A network
Dry Ice - Molecule
Lime - Ionic
Gold bar - Metallic
Explanation:
The items are;
dry ice (CO2)
lime (CaO)
gold bar (Au)
sand (SiO2)
The options are;
molecular,
an ionic,
a network,
or a metallic solid
Among the items, the only metal present is the gold bar. So it makes sense that the gold bar is matched with 'Metallic solid'.
The Calcium oxide is an 'ionic' compound as it contains the calcium ion and the oxygen ion bonded by an electrovalent bond.
Dry Ice, CO2 is a molecule composed of one carbon atom bonded to two oxygen atoms via two double bonds. So it is matched with 'Molecular'
The only option left is 'A network' and it is matched with Sand (SiO2).
The result is given as;
Sand - A network
Dry Ice - Molecule
Lime - Ionic
Gold bar - Metallic
Ответ:
CH₄ + 2 Cl₂ → CCl₄ + 4 HCl
According to Balanced Equation,
44.8 L (2 moles) Cl₂ gas when consumed gives = 22.4 (1 mole) L CCl₄ gas
So, for 1.1 mL (0.001 L) Cl₂ gas, the amount of CCl₄ produced will be,
0.001 L Cl₂ gas on consumption will give = X L of CCl₄ gas
Solving for X,
X = (0.001 L × 22.4 L) ÷ 44.8 L
X = 0.005 L of Cl₄
Or,
X = 5 mL of CCl₄
Result:
On consumption of 1.1 mL of Cl₂ gas, 5 mL of CCl₄ gas is produced.