Answer:
A) An ionic bond is much stronger than most covalent bonds.
Explanation:
D) Ionic compounds have high melting points causing them to be solid at room temperature, and conduct electricity when dissolved in water. Covalent compounds have low melting points and many are liquids or gases at room temperature.
C) An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.
A) Covalent bonds are stronger if you compare with ionic molecules, because their molecular orbital overlap is bigger. However, ionic molecules form lattices, thus the energy to break this lattice bond is stronger hence the ionic bond is stronger.
Thickness of cooper sheet is 0.048 cm (Approx.)
Given that;
Density of copper = 8.96 g/cm³
Measures of copper sheet = 5.5 cm × 5.5 cm
Mass of of copper sheet = 12.96 gram
Find:
Thickness of cooper sheet
Computation:
Volume = Mass / Density
Volume of cooper = 12.96 / 8.96
Volume of cooper = 1.4464
Volume of cooper = 1.45 cm³ (Approx.)
Volume of cooper sheet = 5.5 cm × 5.5 cm x Thickness
5.5 cm × 5.5 cm x Thickness = 1.45
Thickness of cooper sheet = 0.04793
Thickness of cooper sheet = 0.048 cm (Approx.)
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Chemical weathering is when things get weathered chemically
Answer:
The correct name for PH3 is phosphine and is classed as pnictogen hydride gas.
Answer:
A. ![r=k[NO]^2[H_2]](https://tex.z-dn.net/?f=r%3Dk%5BNO%5D%5E2%5BH_2%5D)
B. 
C. Second-order with respect to NO and first-order with respect to H₂
Explanation:
Hello,
In this case, for the reaction:
The rate law is determined by writing the following hypothetical rate laws:
![3.822x10^{-3}=k[0.3]^m[0.35]^n\\\\1.529x10^{-2}=k[0.6]^m[0.35]^n\\\\3.058x10^{-2}=k[0.6]^m[0.7]^n](https://tex.z-dn.net/?f=3.822x10%5E%7B-3%7D%3Dk%5B0.3%5D%5Em%5B0.35%5D%5En%5C%5C%5C%5C1.529x10%5E%7B-2%7D%3Dk%5B0.6%5D%5Em%5B0.35%5D%5En%5C%5C%5C%5C3.058x10%5E%7B-2%7D%3Dk%5B0.6%5D%5Em%5B0.7%5D%5En)
Whereas we can compute m as follows:
![\frac{3.822x10^{-3}}{1.529x10^{-2}} =\frac{[0.3]^m[0.35]^n}{[0.6]^m[0.35]^n} \\\\0.25=(0.5)^m\\\\m=\frac{log(0.25)}{log(0.5)} \\\\m=2](https://tex.z-dn.net/?f=%5Cfrac%7B3.822x10%5E%7B-3%7D%7D%7B1.529x10%5E%7B-2%7D%7D%20%3D%5Cfrac%7B%5B0.3%5D%5Em%5B0.35%5D%5En%7D%7B%5B0.6%5D%5Em%5B0.35%5D%5En%7D%20%5C%5C%5C%5C0.25%3D%280.5%29%5Em%5C%5C%5C%5Cm%3D%5Cfrac%7Blog%280.25%29%7D%7Blog%280.5%29%7D%20%5C%5C%5C%5Cm%3D2)
Therefore, the reaction is second-order with respect to NO. Thus, for hydrogen, we find n:
![\frac{1.529x10^{-2}}{3.058x10^{-2}} =\frac{[0.6]^2[0.35]^n}{[0.6]^2[0.7]^n} \\\\0.5=(0.5)^n\\\\n=\frac{log(0.5)}{log(0.5)}\\ \\n=1](https://tex.z-dn.net/?f=%5Cfrac%7B1.529x10%5E%7B-2%7D%7D%7B3.058x10%5E%7B-2%7D%7D%20%3D%5Cfrac%7B%5B0.6%5D%5E2%5B0.35%5D%5En%7D%7B%5B0.6%5D%5E2%5B0.7%5D%5En%7D%20%5C%5C%5C%5C0.5%3D%280.5%29%5En%5C%5C%5C%5Cn%3D%5Cfrac%7Blog%280.5%29%7D%7Blog%280.5%29%7D%5C%5C%20%5C%5Cn%3D1)
A) Therefore, the reaction is first-order with respect to H₂. In such a way, we conclude that that the rate law is:
B) Rate constant is computed from one kinetic data:
C. As mentioned before, reaction is second-order with respect to NO and first-order with respect to H₂.
Best regards.
