At stp how many liters of oxygen are required to react completely with 3.6 liters

1 answer:

3 0

If it is assumed that this reaction is taking place at STP (standard temperature and pressure) then one mole of gas occupies 22.4L

You can then calculate that 3.6L of Hydrogen contains 0.16mol 
1mol/22.4L x 3.6L = 0.16mol 

Every 2 moles of Hydrogen require 1 mole of oxygen to form water. Therefore half of the number of moles of oxygen are required. 
0.16mol/2 = 0.08mol 

Again, we know that at STP 1 mol occupies 22.4L 
0.08mol x 22.4L/mol = 1.79L of O2 needed. 

Also 3.6/2 = 1.8 All ideal gasses will occupy the same ammount of space at STP

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Given the law of conservation of energy, what happens when a 200°C iron bar is placed in thermal contact with a 30°C block of wo

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Answer:

The correct answer is A Energy leaves the iron bar and enters the wood until the temperature are equal.

Explanation:

According to the law of conservation of energy or the first law thermodynamics energy neither be created nor destroyed, energy is transferred from one form to another form.

Here iron bar is placed in wood block energy is transferred from iron bar to wood until the temperatures are equal.