Usually the presence of a dominant version of allele masks the expression of a recessive allele. A recessive allele is only phenotype is only expressed when 2 recessive alleles combine.
Answer:
c sounds like the most reasonable answer rember to always divide the pressure value by 101
To determine the concentration of one solution which is specifically basic or acidic solution through taking advantage on its points of equivalence, titration analysis is done.
Let us determine the reaction for the titration below:
2NaOH +2H2SO4 = Na2SO4 +2H2O
So,
0.0665 mol NaOH (2 mol H2SO4/ 2mol NaOH) / .025 L solution
= 2.62 M H2SO4
The answer is the fourth option:
<span>2.62 M</span>
Answer:
Mass = 176 g
Explanation:
Given data:
Volume of CH₄ = 89.6 L
Mass of CO₂ formed = ?
Solution:
Chemical equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
one mole of any gas at STP occupy 22.4 L volume.
number of moles of CH₄ that occupy 89.6 L = 89.6/22.4 = 4 mol
Now we will compare the moles of CH₄ and CO₂:
CH₄ : CO₂
1 : 1
4 : 4
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 4 mol × 44 g/mol
Mass = 176 g
<u>Answer:</u> The correct answer is Option d.
<u>Explanation:</u>
Electronegativity is defined as the tendency of an element to attract the shared pair of electron towards itself in a compound.
When electron is transferred from less electronegative atom to more electronegative atom.
The atom which is more electronegative gains electron and undergoes reduction reaction.
Reduction reaction is defined as the reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.
![X^{n+}+ne^-\rightarrow X](https://tex.z-dn.net/?f=X%5E%7Bn%2B%7D%2Bne%5E-%5Crightarrow%20X)
During the transfer of electrons, energy is released when an electron looses is potential energy during the transfer.
Hence, the correct answer is Option d.