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pochemuha
2 years ago
8

Balancea las siguientes ecuaciones por el método de redox. Determina el

Chemistry
1 answer:
Rus_ich [418]2 years ago
3 0

Answer:

Traduzca al ingles para que pueda responder a su pregunta. Te dare la reapuesta en los comentarios

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Why is a solution that is 0.10M HCN and 0.10M LiCN considered a good buffer system?
const2013 [10]
Because of the common ion effect. Adding a common ion decreases the solubility of the salt which is the intention of a buffer.
8 0
3 years ago
When 2.50 g of an unknown weak acid (ha) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of water, the freezing point of
baherus [9]
When dT = Kf * molality * i
                = Kf*m*i
and when molality = (no of moles of solute) / Kg of solvent
                               = 2.5g /250g x 1 mol /85 g x1000g/kg
                               =0.1176 molal
and Kf for water = - 1.86 and dT = -0.255
by substitution 
0.255 = 1.86* 0.1176 * i
∴ i = 1.166
when the degree of dissociation formula is: when n=2 and  i = 1.166
a= i-1/n-1 = (1.166-1)/(2-1) = 0.359 by substitution by a and c(molality) in K formula
∴K = Ca^2/(1-a)
     = (0.1176 * 0.359)^2 / (1-0.359)
     = 2.8x10^-3



5 0
3 years ago
How can you tell if a chemical equation is balanced
k0ka [10]

Answer:

A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction.

Explanation:

    The law of conservation of matter (except in nuclear reactions) indicates that atoms can neither be created or destroyed.

    The number of atoms that are in the  reactants must be the same as the number of the atoms that are in the product.

    The number and types of molecules can (and will) change. The atoms that make up the molecules are rearranged but the number and kinds of atoms stay the same.  

3 0
3 years ago
Which material has carbon atoms interspersed with iron atoms in its molecular structure?
gogolik [260]

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steel should be correct

4 0
2 years ago
Which compound is a hydrocarbon?
deff fn [24]

Answer:

C2H6 OR C6H12O6 THE ANSWER

3 0
2 years ago
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