Answer:
(a) The molality of this solution is 0.0613
(b)The molality of this solution is 2.04
Explanation:
The molality (m) of a solution is defined as the number of moles of solute present per kg of solvent.
The Molality of a solution is determined by the expression:
Molality is expressed in units
(a) You have 14.3 g of sucrose (C₁₂H₂₂O₁₁), the solute. With the molar mass of sucrose being 342 , then 14.3 grams of the compound represents the following number of moles:
0.042 moles
Having 685 g= 0.685 kg (being 1000 g= 1 kg) of water, the solvent, molality can be calculated as:
Solving:
molality= 0.0613
<u><em>The molality of this solution is 0.0613</em></u><u><em></em></u>
(b) In this case you have 7.15 moles of ethylene glycol (C₂H₆O₂), the solute, in 3505 g (equal to 3.505 kg) of water, the solvent, molality can be calculated as:
Solving:
molality= 2.04
<em><u>The molality of this solution is 2.04</u></em><em><u /></em>
Answer:
the forward and reverse reactions occur at the same rate
Explanation:
A reaction is in chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction.
In equilibrium reaction the concentration of the reactants and products is constant. A reaction is in chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction. The chemical equation will be shown as,
α A + β B ⇌ σ S + τ T
231.75 because 3.09 (gas price) times 75 equlas 231.75
The answer is element because there is no two subsances that can make up an element
Answer:
The object is moving away from the origin
The object started at 2 meters
The object is traveling at a constant velocity
Explanation: