Calculating K from Known Initial Amounts and the Known Change in Amount of One of the Species<span>Write the equilibrium expression for the reaction.Determine the molar concentrations or partial pressures of each species involved.<span>Determine all equilibrium concentrations or partial pressures using an ICE chart.</span></span>
There are three specific types of stress.
Compression occurs when pressure pushes in on an object from opposite sides this happens slowly.
Tension occurs when pressure pulls on opposite sides of an object, causing it to stretch this happens quickly.
shear occurs when two objects try to slide past each other in opposite directions this happens not to fast but not to slow.
The metal which react with concentrated sodium hydroxide to produce hydrogen gas is ALUMINIUM.
The equation of the reaction is as follows:
2AL + 2NaOH + 2H2O = 2 NaALO2 + 3H.
The product formed is called sodium aluminate. The reaction is an exothermic reaction and is accompany by the evolution of hydrogen gas.
<u>Answer:</u> The molar mass of unknown gas is 367.12 g/mol
<u>Explanation:</u>
Rate of a gas is defined as the amount of gas displaced in a given amount of time.

To calculate the rate of diffusion of gas, we use Graham's Law.
This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

So,

We are given:
Volume of unknown gas (X) = 1.0 L
Volume of oxygen gas = 1.0 L
Time taken by unknown gas (X) = 105 seconds
Time taken by oxygen gas = 31 seconds
Molar mass of oxygen gas = 32 g/mol
Molar mass of unknown gas (X) = ? g/mol
Putting values in above equation, we get:

Hence, the molar mass of unknown gas is 367.12 g/mol
Answer:
1.
- A) protons and neutrons
- B) electrons
2.
- By changing the number of proton.
Explanation:
Protons and neutrons are located at the center of an atom which is nucleus .
Electrons will orbit around the nucleus .