-- An orange is orange.
-- An orange is spherical.
-- An orange is a malleable solid.
-- An orange has a bumpy surface.
-- An orange weighs between 1/10 pound and 2 pounds.
A binary ionic compound is composed of ions of two different elements - one of which is a metal, and the other a nonmetal.
Remember, covalent compounds are compounds with bonds between two non-metals. Ionic bonds are those between a metal and a non-metal.
To determine if an element is a metal or non-metal, simply look at the periodic table! So...
a. Li is found on the left side while F is found on the right. A bond between a metal and a non-metal. This is an ionic bond.
b. Mg is found on the left side while S is found on the right. A bond between a metal and a non-metal. This is an ionic bond.
c. This is a tricky one. ammonia, or NH3, is covalent. You just have to remember this one. It has no net charge, unlike its brother NH4 (which has a 1+ charge put is still covalently bonded). Hydrogen has weird properties!
d. Ca is found of the left side while Cl is found on the right. A bond between a metal and a non-metal. This is an ionic bond. Also consider the charges! Ca has a charge of 2+ but Cl only has a charge of 1-. This is why there are 2 Cloride atoms.
Answer:
42.8
Explanation:
Let's consider the following reaction at equilibrium.
CO(g) + 2 H₂(g) ⇌ CH₃OH(g)
The concentration equilibrium constant (Kc) is equal to the product of the concentration of the products raised to their stoichiometric coefficients divided by the product of the concentration of the reactants raised to their stoichiometric coefficients.
The concentration equilibrium constant for this reaction is:
The rate constant is 4.84 * 10^11 s-1.
From the Arrhenius equation;
k = Ae^-Ea/RT
k = rate constant = ?
A = frequency factor = 4.99×1011 s−1
Ea = Activation energy = 86.4 kJ/mol
R = gas constant = 8.314 J/K/mol
T = Absolute temperature = 74.0 °C + 273 = 347 K
k = 4.99×10^11e^- 86.4/8.314 * 347
k = 4.84 * 10^11 s-1.
The rate constant is 4.84 * 10^11 s-1.
Learn more: brainly.com/question/626780