A barometer measures atmospheric pressure.
Empirical formula: Li4OH
Answer:
1 mole: 44.771 g
1 gram = 0.022 mole
Explanation:
Element: Li
Percentage by mass: 62.01%
Number of atoms: 4
Mass of atom;: 6.941
Element: O
Percentage by mass: 35.74%
Number of atoms: 1
Mass of atom: 15.9994
Element: H
Percentage by mass: 2.25%
Number of atoms: 1
Mass of atom: 1.00794
Answer:
3 is the coefficient of oxygen.
Explanation:
Chemical equation:
CH₃OH + O₂ → CO₂ + H₂O
Balanced chemical equation:
2CH₃OH + 3O₂ → 2CO₂ + 4H₂O
The given reaction is combustion reaction. In this reaction methanol is burn in the presence of oxygen and produces carbon dioxide and water.
The balance equation show reaction also follow the law of conservation of mass.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
The volume that will this gas have at 1.00 atmosphere pressure is 254.6. The volume is 254.6.
<h3>What is Boyle's law?</h3>
Boyle's law says that the volume of a gas at constant temperature varies with varying pressure.
The formula is
P1 V1 = P2 v2
P1 = 645
P2= 1.00 = 760 mmhg
V1 = 300 ML
V2 =?
Putting the value in the equation
645 x 300 = 760 x V2 =
V2 = 254.6
Thus, the volume is 254.6.
Learn more about Boyle's law
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