Molecular formula of Ozone is O3. Hence ozone molecule contains 3 oxygen atoms.
Hope this helps!
Explanation:
This is expressing as a subject of a formula of a specie.
This equation is used in solving for specific heat capacity of a material;
equation:
c = 
First cross multiply:
c[M(T2 - T1)] = h
Then multiply both sides by
:
x c[M(T2 - T1)] =
x h
M(T2 - T1) = 
Multiply both sides by 
x M(T2 - T1) = 
T2 - T1 = 
Now rearrange to produce;
T1 = T2 + 
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Answer:
The air pressure is 9.8 *10^4 pa
The water will rise to a height of 10.0 meter
Explanation:
Step 1: Data given
As a storm from moves in, you notice that a column of mercury in a barometer rises to 736 mm.
Step 2: Calculate the air pressure
The Pressure against the mercury column = h*d*g = 0.736 * 13593 * 9.81 = 9.8 * 10^4 Pa
Step 3: Calculate the height of the water
Let the Pressure the water column for same pressure is h meter : -
9.8 * 10^4 = h*d*g
=>9.8*10^4 = h*1000*9.81
=>h = 10.0 meter
The water will rise to a height of 10.0 meter
Answer: The coefficient for the diatomic oxygen (O2) is 3.
Explanation:
To know the coefficient for the diatomic Oxygen, we need to balance the equation.
Fe + O2 -------> Fe2O3
LHS of the equation; Fe = 1 , O2 = 1
RHS of the equation; Fe = 2 , O = 3
∴ Multiply 'Fe' on the LHS of the equation by 4 and O2 by 3
Doing that will give the balance equation which is;
4 Fe + 3 O2 --------> 2 Fe2O3
The coefficient for the diatomic oxygen (O2) as seen from the equation is 3.
<h2>
Hello!</h2>
The answer is:
The empirical formula is the option B. 
<h2>
Why?</h2>
The empirical formula of a compound is the simplest formula that can be written. On the opposite, the molecular formula involves a variant of the same compound, but it can be also simplified to an empirical formula.

We are looking for a formula that cannot be simplified by dividing the number of molecules/atoms that conforms the compound.
Let's discard option by option in order to find which formula is an empirical formula (cannot be simplified)
A. 
It's not an empirical formula, it's a molecular formula since it can be obtained by multiplying the empirical formula of the same compound.

B. 
It's an empirical formula since it cannot be obtained by the multiplication of a whole number and the simplest formula. It's the simplest formula that we can find of the compound.
C. 
It's not an empirical formula, it's a molecular formula since it can be obtained by multiplying the empirical formula of the same compound.

D. 
It's not an empirical formula, it's a molecular formula since it can be obtained by multiplying the empirical formula of the same compound.

Hence, the empirical formula is the option B. 
Have a nice day!