Answer:
1-Genetics
2-Alleles
3-Organism's genotype
4-Phenotypes and Genotypes
5-Allele
6-Gregor Mendel
7-Genotype
8-Probability
9-Hybrid
10-Genotypic Ratio
11-Phenotypic ratio
12-Heterozygous
Explanation:
eight
four
six
The answer is: four.
For example compound carbon dioxide (CO₂):
Electron configuration of carbon: ₆C 1s² 2s² 2p².
Electron configuration of oxygen: ₈O 1s² 2s² 2p⁴.
Carbon atom is sp2 hybridized, it has three sp2 orbitals and one p orbital, they form four bonds.
Oxygen has two p orbitals, they form two bonds (one sigma and one pi bond).
p orbitals from carbon and oxygen overlap and form pi bond.
Answer:
Tin: 54.3%
Zinc: 45.7%
Explanation:
The molar masses of the elements are:
Tin: Sn = 117.710 g/mol
Zinc: Zn = 65.409 g/mol
Fluorine: F = 18.998 g/mol
The fluorine gas in excess, so the reaction consumes all the alloy, and all the tin is converted to SnF₄ and all the zinc is converted to ZnF₂. The molar masses of the fluorides are:
SnF₄ = 117.710 + 4*18.998 = 193.702 g/mol
ZnF₂ = 65.409 + 2*18.998 = 103.405 g/mol
If we call x the number of moles of SnF₄, and y the number of moles of ZnF₂, the total mass can be calculated knowing that the mass is the number of moles multiplied by the molar mass:
193.702x + 103.405y = 2.489
The number of moles of Sn is the same as SnF₄ (1:1), and also the number of moles of Zn is the same as ZnF₂ (1:1), so the mass of the alloy:
117.710x + 65.409y = 1.540
if we multiply it by -1.581 and sum with the other equation:
117.710x*(-1.581) + 65.409y*(-1.581) + 193.702x + 103.405y = 1.540*(-1.581) + 2.489
7.60249x = 0.05426
x = 0.0071 mol of Sn
117.710*0.0071 + 65.409y = 1.540
65.409y = 0.704259
y = 0.0108 mol of Zn
The masses are the molar mass multiplied by the number of moles:
Sn: 117.710*0.0071 = 0.836 g
Zn: 65.409*0.0108 = 0.704 g
The percent composition is the mass of the substance divided by the total mass multiplied by 100%:
Sn: (0.836/1.540)*100% = 54.3%
Zn: (0.704/1.540)*100% = 45.7%
Answer: Option (3) is the correct answer.
Explanation:
A reaction in which the concentration of reactants equal to the concentration of products is known as an equilibrium reaction.
For example,
Therefore, we can also say that in an equilibrium reaction rate of forward reaction becomes equal to the backward reaction.
The true statement about a system at equilibrium is that the forward reaction rate is equal to the reverse reaction rate.
Equilibrium state is that state in which the concentration of reactant as well as of producrs are constant. i.e. not changes.
Equilibrium state of any reaction will be represented by the double headed arrow as:
A + B ⇄ C + D
Given reaction defines that rate of forward reaction is equal to the rate of the backward reaction.
Hence option (3) is correct.
To know more about equilibrium state, visit he below link:
the true molar mass of the compound is 166.22 g/mol, what is its molecular
formula?
Answer:The empirical formula is KCO2
Explanation:
Benzoic acid is separated from acetanilide using sodium bicarbonate by converting it into sodium benzoate, which is soluble in water. Acetanilide remains unaffected in the mixture.
In the process of separating benzoic acid from acetanilide using sodium bicarbonate, the basic nature of sodium bicarbonate reacts with the acidic benzoic acid, leading to the formation of sodium benzoate. The sodium benzoate is highly soluble in water, allowing it to be easily separated from the acetanilide, which remains insoluble. On the other hand, acetanilide is not affected by the sodium bicarbonate and remains unaffected in the mixture.
Learn more about Separation of benzoic acid and acetanilide using sodium bicarbonate here:
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(2) magnesium (4) zinc