2H₂ + O₂ = 2H₂O
H₂ hydrogen molecule
O₂ oxygen molecule
Pretty sure it’s B, it increases then remains constant
Hope this help
Answer:
Explanation:
The molar mass of a given substance corresponds and pertains to the unit mole of the mass substance which is stated in g/mol
no of moles of H = mass of H/molar mass of H
= 2 kg/ 2 g/mol
= 2000 g/ 2 g/mol
= 1000 moles
moles of O2 = mass (O2)/ molar mass (O2)
= 2 kg/ 32 g/mol
= 2000 g / 32 g/mol
= 62.5 moles
Total moles present = (1000 + 62.5) moles
= 1062.5 moles
= 1.063 kmol
Total mass = 2kg + 2kg
= 4 kg
no of moles = mass/molar mass
molar mass = mass/ no of moles
molar mass = 4 kg/ 1.063 kmol
molar mass = 3.763 kg/kmol
The specific volume of the final mixture can be determined by the relation:
where;
V = 3 m³
m = 4 kg
= 0.75 m³/ kg
For the final volume, The molar specific volume is:
where;
∴
Answer:
The word "Halloween" comes from All Hallows' Eve and means "hallowed evening."
Halloween's origins can be traced back to the ancient Celtic festival known as Samhain, which was held on November 1 in contemporary calendars. It was believed that on that day, the souls of the dead returned to their homes, so people dressed in costumes and lit bonfires to ward off spirits.
Explanation:
Answer:
When breaking a chemical bond, energy is absorbed by the chemical bond.
Explanation:
Chemical bonds are the forces of attraction that joins two chemical species. There are two types of chemical bonds: Strong Primary and Weak Secondary bonds.
When a chemical bond is formed between two species, it is accompanied by the release of energy. Therefore, <em>bond formation is an exothermic process</em>.
<u>However, energy is always required to break a chemical bond. As energy is needed to overcome the attractive forces present between the two species.</u> Therefore, <em>bond dissociation is an endothermic process.</em>
<u><em>Therefore, during bond dissociation, energy is absorbed by the chemical bond.</em></u>