Answer: The solution will deviate positively to Raoult's law. The correct option is A.
Explanation:
Raoult's law states that the partial pressure of components of a liquid mixture is equal to the vapour pressure of the individual components multipled by it's mole fraction. Since the solutions of the two liquids interacts less favourably than they do in the individual liquids, there will be less attraction. This will lead to a slightly high vapour pressure as the molecules easily escapes from the surface. Increased vapour pressure deviates Raoult's law positively.
Answer:
287.30 g of FeCO₃
Solution:
The Balance Chemical Equation is as follow,
FeCl₂ + Na₂CO₃ → FeCO₃ + 2 NaCl
Step 1: Calculate Mass of FeCl₂ as,
Molarity = Moles ÷ Volume
Solving for Moles,
Moles = Molarity × Volume
Putting Values,
Moles = 2 mol.L⁻¹ × 1.24 L
Moles = 2.48 mol
Also,
Moles = Mass ÷ M.Mass
Solving for Mass,
Mass = Moles × M.Mass
Putting Values,
Mass = 2.48 mol × 126.75 g.mol⁻¹
Mass = 314.34 g of FeCl₂
Step 2: Calculate Mass of FeCO₃ formed as,
According to equation,
126.75 g (1 mole) FeCl₂ produces = 115.85 g (1 mole) FeCO₃
So,
314.34 g of FeCl₂ will produce = X g of FeCO₃
Solving for X,
X = (314.34 g × 115.85 g) ÷ 126.75 g
X = 287.30 g of FeCO₃
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Boron's atomic number is 5
<u>Answer:</u> The mass of chlorine gas is 4.54 grams.
<u>Explanation:</u>
To calculate the mass of the gas, we use the equation given by ideal gas equation:
Or,
where,
P = pressure of the gas = 98.7 kPa
V = Volume of gas = 3.34 L
m = given mass of chlorine gas = ?
M = Molar mass of chlorine gas = 35.45 g/mol
R = Gas constant =
T = Temperature of the gas =
Putting values in above equation, we get:
Hence, the mass of chlorine gas is 4.54 grams.
The best and most correct answer among the choices provided by your question is the fourth choice which is "<span>Heat moves through conduction, convection, and radiation."
</span>Heat transfer<span> is the exchange of thermal energy between physical systems. The rate of </span>heat transfer<span> is dependent on the temperatures of the systems and the properties of the intervening medium through which the</span>heat<span> is </span>transferred<span>. The three fundamental modes of </span>heat transfer<span> are conduction, convection and radiation.</span>
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