Select the classification for the following reaction. 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) a. precipitation b. acid-base c. redo
1 answer:
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Answer:
<h2>2. H2O < CH3OH < CH3CH2OH < C9H20</h2>Explanation:
Decane is a hydrocarbon so it is a non-polar molecule. Non-polar molecules are soluble in non-polar molecules and polar molecules are soluble in polar molecules. Water is a polar molecule so it is least soluble in decane molecule and is a non-polar molecule so it is most soluble in decane molecule. Methanol and ethanol are the derivatives of hydrocarbon so they have more solubility than water but less solubility than nonane molecules.
Answer:
The mass of titanium displaces 68.6 mL of water is 309.4 g.
Explanation:
Given that:-
Also, 1 = 1 mL
So,
The expression for the calculation of density is shown below as:-
Using the above expression to calculate the mass as:-
Applying the values to calculate the mass as:-
<u>The mass of titanium displaces 68.6 mL of water is 309.4 g.</u>
Answer : The number of moles of gas added must be, 1.59 moles.
Explanation :
Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.
The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.
The given equilibrium reaction is,
Initial conc. 2.86 x 0 0
At eqm. (2.86-1.30) (x-1.30) 1.30 1.30
The expression of will be,
Now put all the given values in this expression, we get:
Thus, the number of moles of gas added must be, 1.59 moles.