Answer:
The correct option is : C) limestone.
Explanation:
Carbonate rocks are a type of sedimentary rocks. The carbonate rocks are composed of carbonate minerals. The carbonate minerals are the minerals containing carbonate ion (CO₃²⁻).
The most common type of carbonate rock is limestone. Limestone is composed of the minerals calcite and aragonite, which have a different crystal form of calcium carbonate.
Therefore, Limestone is the most common type of carbonate rock.
b. Nickel(III) sulfate
c. Sodium permanganate
d. Iron(II) bromide
Answer:
a.
The molarity of Co³⁺ is 0.027 M
The molarity of Cl⁻ 0.081 M
b.
The molarity of Ni³⁺ is 0.022 M
The molarity of SO₄²⁻ is 0.033 M
c.
The molarity of Na⁺ is 0.031 M
The molarity of MnO₄⁻ is 0.031 M
d.
The molarity of Fe²⁺ is 0.021 M
The molarity of Br⁻ is 0.042 M
Explanation:
The molarity of each ion is the molarity of the salt times the number of ions in the formula. First, we will calculate the molarity of each salt.
a. Cobalt(III) chloride. CoCl₃
The molar mass of CoCl₃ is 165.29 g/mol. The molarity of CoCl₃ is:
The molarity of Co³⁺ is 1 × 0.027 M = 0.027 M
The molarity of Cl⁻ is 3 × 0.027 M = 0.081 M
b. Nickel(III) sulfate. Ni₂(SO₄)₃
The molar mass of Ni₂(SO₄)₃ is 405.57 g/mol. The molarity of Ni₂(SO₄)₃ is:
The molarity of Ni³⁺ is 2 × 0.011 M = 0.022 M
The molarity of SO₄²⁻ is 3 × 0.011 M = 0.033 M
c. Sodium permanganate. NaMnO₄
The molar mass of NaMnO₄ is 141.92 g/mol. The molarity of NaMnO₄ is:
The molarity of Na⁺ is 1 × 0.031 M = 0.031 M
The molarity of MnO₄⁻ is 1 × 0.031 M = 0.031 M
d. Iron(II) bromide. FeBr₂
The molar mass of FeBr₂ is 215.65 g/mol. The molarity of FeBr₂ is:
The molarity of Fe²⁺ is 1 × 0.021 M = 0.021 M
The molarity of Br⁻ is 2 × 0.021 M = 0.042 M
The reactions that would have the smallest value of K is
A + B → 2 C; E°cell = -0.030 V
Option A
Generally the equation for the number of electrons transferred is mathematically given as
where
T= Temperature
F=25C(298K)
R = Gas constant
R= 8.314 J/K.mol
F = Faraday's constant
F= 96500 C
We see from the equation that the E-cell is directly proportional to K(equilibrium constant of the reaction)
Hence, The reactions that would have the smallest value of K is
A + B → 2 C; E°cell = -0.030 V
For more information on Reaction
Answer:
The reaction with smallest value of K is :
A + B → 2 C; E°cell = -0.030 V
Explanation:
where :
n = number of electrons transferred
F = Faraday's constant = 96500 C
= standard electrode potential of the cell
R = Gas constant = 8.314 J/K.mol
T = temperature of the reaction =
= equilibrium constant of the reaction
As we cans see, that standard electrode potential of the cell is directly linked to the equilibrium constant of the reaction.
So, the reaction with smallest value of electrode potential will have smallest value of equilibrium constant. And that reaction is:
A + B → 2 C;
B. -1,+1,0
C. -2,+3,-1
D. 0,0,0
Three resonance structures contribute to the structure of dinitrogen monoxide.
The resonance structure is invoked when a single structure can not sufficiently explain all the bonding properties of a compound. All the various contributing structures contribute to the final structure of the compound but not all to the same degree.
There are three resonance structures of dinitrogen monoxide. The most stable structure is always the structure that has the formal charges as -1, +1 and zero as shown.
Learn more: brainly.com/question/14283892
Answer:
A. 0, +1, -1
Explanation:
You can draw the lewis structure for NNO 3 ways: With two double bonds N=N=O, with a triple bond between the N and O and single bond between the two N's, or a triple bond between the two N's and a single bond between the N and O.
The goal is to have formal charges that are as small as possible, to have no identical formal charges on adjacent atoms, and to have the most negative formal charge on the most electronegative atom. The most stable structure is the one with the triple bond between the two N's because it gives the formal charges 0, 1, and -1 respectively. Unlike the other two structures, the negative formal charge is correctly placed on O, the most electronegative atom.
Answer:
30 cm³
Explanation:
Step 1: Given data
Step 2: Calculate the volume occupied by aluminum
The density of aluminum is equal to its mass divided by its volume.
ρ = m/V
V = m/ρ
V = 81 g / 2.7 g/cm³
V = 30 cm³
Answer:
See explanation below
Explanation:
In both cases the central atoms, C in CHCl₃ and O in H₂O, are sp³ hybridized .
Since they are sp³ hybridized we predict an angle between the H-C-Cl and H-O-H of 109.5 º ( tetrahedral ), but two of the sp³ orbitals in water are occupied by lone pairs.
These lone pairs do excercise more repulsion ( need more room ) than the bonds oxygen is making with hydrogen.
As a consequence of this repulsion the angles H-O-H are less than the predicted 109.5º in tetrahedra. ( Actually is 104.5 º)
Answer : The rate for the formation of hydrogen is, 1.05 M/s
Explanation :
The general rate of reaction is,
Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.
The expression for rate of reaction will be :
From this we conclude that,
In the rate of reaction, A and B are the reactants and C and D are the products.
a, b, c and d are the stoichiometric coefficient of A, B, C and D respectively.
The negative sign along with the reactant terms is used simply to show that the concentration of the reactant is decreasing and positive sign along with the product terms is used simply to show that the concentration of the product is increasing.
The given rate of reaction is,
The expression for rate of reaction :
The rate of reaction expression is:
As we are given that:
Now we to determine the rate for the formation of hydrogen.
Thus, the rate for the formation of hydrogen is, 1.05 M/s