_____NaOH + _____H2 SO4 _____ Na2SO4 + _____ H2O ,
To balance this equation,
Step 1:
Balance the number of sodium on both side:
by multiplying the NaOH by 2 that is:
2NaOH+H2SO4-------->Na2SO4+H2O
Step2:
As NOW the number of oxygen atom and hydrogen atom are not equal on both sides. So we multiply this H2O by 2 that is:
2NaOH+H2SO4-------->Na2SO4+2H2O
Now the no of all atoms on product side is equal to no of all atoms in the reactant side.
so the coefficient is 2 NaOH+1 H2SO4-------->1 Na2SO4+2 H2O.
Probably its atomic number (proton number), because this is how they are arranged already.
Other factors are their form (metal/non-metal) etc., which determines how they react with each other and bond.
Another important factor is the number of electrons in their valent (outer) shell. This is because it tells use how the atom will react/bond with other atoms, how 'violent' that reaction will be, and whether it will bond at all (eg. nobel gases)
Fahrenheit is a temperature scale
Convection currents in air
Explanation:
The convection currents in air tends to blow out winds towards the water at night.
Convection is a mode of heat transfer commonly found in fluids.
It involves the movement of the particles due to differences in temperature and density of the air.
- The land and water heats at different rate.
- The land absorbs and loses heat quickly because it is a good conductor of heat.
- At night, the shore area is cold.
- The air around is very dense and close to the surface.
- This air mass moves towards the surface of the ocean.
- The ocean has high specific heat capacity and takes a long time to heat and cool.
- At night, as it is loosing heat, the air around warms up and rises shifting land ward.
- This movement of cold and dense air from land and the attendant movement of warm air to the land sets up convection currents in the air.
learn more:
Heat transfer in the sun brainly.com/question/1140127
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To Find :
The STP moles of 67.2 L CO.
Solution :
We know, molar volume at STP is used to converted into moles by :
1 moles = 22.4 L STP
So, number of moles in 67.2 L CO is :
![n=\dfrac{67.2}{22.4}\\\\n = 3 \ moles](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7B67.2%7D%7B22.4%7D%5C%5C%5C%5Cn%20%3D%203%20%5C%20moles)
Therefore, number of STP moles are 3.
Hence, this is the required solution.