Fluorine gas is placed in contact with calcium metal at high temperatures to produce calcium fluoride powder. What is the formul
2 answers:
The formula equation for any reaction is the chemical equation which involves the chemical formulas of the element(s) or compound(s) involved in the reaction. On the left side of the , reactants are written and different reactants are separated by
sign whereas on the right side of the
, products are written and different products are separated by
sign. The phases (solid, liquid, or gas) of all the reactants and products are written in brackets after the chemical formula of respective reactants and products.
The formula for fluorine gas is , acts as reactant.
The formula for calcium metal is , acts as reactant.
The formula for calcium fluoride is , acts as product.
The reaction is written as:
Hence, the formula equation for the reaction is:
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Mass of this substance = 9.928 g
<h3>Further explanation</h3>Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
So to find the number of moles can be expressed as
mol of substance -Lithium nitrite - LiNO₂ :
V = 250 ml = 0.25 L
M = 0.75 M
So mass of this substance - LiNO₂ (MW=52,947 g/mol) :
Answer:
343.98 nm is the longest wavelength of radiation with enough energy to break carbon–carbon bonds.
Explanation:
A typical carbon–carbon bond requires 348 kJ/mol=348000 J/mol
Energy required to breakl sigle C-C bond:E
where,
E = energy of photon
h = Planck's constant =
c = speed of light =
= wavelength of the radiation
Now put all the given values in the above formula, we get the energy of the photons.
343.98 nm is the longest wavelength of radiation with enough energy to break carbon–carbon bonds.