The energy of the carbide released is 7262.5MJ.
<h3>What is the energy?</h3>
We know that the reaction between calcium oxide and carbon occurs in accordance with the reaction; . The reaction is seen to produce 464.8kJ of energy per mole of carbide produced.
Number of moles of produced = 1000 * 10^3 g/64 g/mol
= 15625 moles of calcium carbide
If 1 mole of transfers 464.8 * 10^3 J
15625 moles of calcium carbide transfers 15625 moles * 464.8 * 10^3 J/ 1 mol
= 7262.5MJ
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Answer:
Explanation:
in the decomposition of gallium chlorate, 75.0grams is heated to produce oxygen and gallium chloride.
Answer:
458ml
Explanation:
According to charles law,
Given values,
Volume occupied
Temperature
Second temperature
Volume
From charles law,
Volume occupied by the oxygen at 0.0°C is 458ml
Answer:
[Cl⁻] = 1,5x10⁻⁴M
Explanation:
First of all, let's determinate the mole of each salt.
Molarity . volume = Mole
Volume must be in L, cause molarity is mol/L
NaCl → Na⁺ + Cl⁻
Ratio is 1:1
0.15 mol/L . 0.025L = 3.75x10⁻³ mole
As ratio is 1:1, from 3.75x10⁻³ mole of salt, I have 3.75x10⁻³ mole of chloride
CaCl₂ → Ca²⁺ + 2Cl⁻
Ratio is 1:2 so, from 1 mol of salt I'll get the double of mole of chloride
0.075 mol/L . 0.010 L = 7.5x10⁻⁴ mol
7.5x10⁻⁴ mol . 2 = 1.5x10⁻³ mole
Total mole of Cl⁻: 3.75x10⁻³ + 1.5x10⁻³ = 5.25x10⁻³
This 5.25x10⁻³ mole are present in a total volume of 35 mL.
Let's convert 35 mL in L → 0.035L (35/1000)
Molarity is mol/L → 5.25x10⁻³ mol / 0.035L = 1,5x10⁻⁴M
The dilution of hydrogen peroxide that would not be considered an effective disinfectant is any solution with a Hydrogen peroxide concentration that is lower to 3%.
<h3>What is hydrogen peroxide?</h3>
Hydrogen peroxide is one of the most common antiseptics. This means it is a substance used as a disinfectant either on surfaces or in small wounds, although its use on wounds is discouraged.
<h3>What concentration works as a disinfectant?</h3>
In most cases, hydrogen peroxide is not found as a pure substance but as a dilution, which means hydrogen peroxide is mixed with other substances such as water to decrease its concentration.
The ideal concentration of hydrogen peroxide is 3%, this concentration makes it an effective disinfectant. In the same way, a lower concentration would not have effectiveness in terms of disinfection.
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