Natural systems like water in a pond rarely reach thermal equilibrium due to temperature differences and energy transfer limitations.
Natural systems like the water in a pond rarely reach thermal equilibrium due to various factors.
These factors prevent the pond from reaching thermal equilibrium.
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(2) The concentration of the products is less than the concentration of the reactants.
(3) The concentration of the products and the concentration of the reactants are equal.
(4) The concentration of the products and the concentration of the reactants are constant.
Answer:
Answer is 4 The concentration of the products and the concentration of the reactants are constant.
Explanation:
Given:
1,500 mL of water
1.33 m (molal solution
Required:
grams of hydrogen peroxide (H2O2
solution:
1.33 molal = 1.33 m = 1.33 moles H2O2/kg water
1 gram/liter of water (1 liter/1000 mL) (1500mL)(1 kg/1000g) = 0.0015 kg water
1.33 moles H2O2/kg water (0.0015 kg water) = 0.001995 moles H2O2
Molar mass of H2O2 = 34 g/mol
0.001995 moles H2O2 (34 g/mol) = 0.068 grams H2O2
Answer: The volume of stock HCl solution required to make laboratory solution will be 0.25L
Explanation:
To calculate the volume of stock solution required to make the laboratory solution, we use the equation:
where,
are the molarity and volume of stock solution.
are the molarity and volume of laboratory solution.
We are given:
Putting values in above equation, we get:
Hence, the volume of stock HCl solution required to make laboratory solution will be 0.25L
Answer:
T(K) = 373.15 K
Explanation:
The kelvin is the base unit of temperature in the International System of Units (SI). The symbol used to express temperature in kelvins is K.
The temperature of zero kelvins is called the absolute zero. It is considered to be the lowest possible temperature, although nothing has reached it. The absolute zero (0K) is - 273.15 degrees Celsius.
This is the equation we can use to solve this question:
We have 100*C.
Answer:
Wurzite has a higher Madelung constant when compared with Sphalerite therefore Wurizite is more stable.
Explanation:
Zinc Sulphide is a chemical compound that exhibits polymorphism. This means Zinc Sulphide can exists in different forms as a compound. Zinc Sulphide has two common polymorphs named; Wurtzite and Sphalerite .
This two polymorphs are crystalline in structure. Wurtzite is hexagonal in shape while Sphalerite is cubic in shape.
Madelung constant was named after German Physicist Erwin Madelung. Madelung constant is dependent on the the way ions are arranged in a solid substance or molecule. It is used to calculate the amount of energy required to move an ion from one point to the another in a crystal substance.
Madelung constant for Wurtzite is 1.64132 and for Sphalerite is 1.63806. Due to the fact that Wurtzite has a slightly higher Madelung constant that Sphalerite, it tends to be more stable than Sphalerite.
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