Rmm of N20 = (14X2) + 16 = 44
Percentage by mass of Nitrogen in N20 = 28/44x100 = 63.64
66x0.6634 = 43.7844g of Nitrogen in 66g of N20
Moles = Mass/Mr = 43.7844/14 = 3.13 moles
Answer:
Hereditary information in the cell would be destroyed.
Explanation:
The nucleus can be defined as a membrane bound organelle that is found in eukaryotic cells. The main function of the nucleus is that it controls all activities that is related to the growth of the cell and also reproduction. The nucleus contains the cell hereditary information(DNA).
The nucleus is the most important organelle in the cell, It can sometimes be referred to as the brain of the cell. Therefore any health related condition that affects the nucleus would directly destroy all hereditary information that is stored in the cell.
Solubility of barium chloride at 30 degree Celsius is 38.2g /100 g water and solubility of barium chloride at 60 degree Celsius is 46.6 g / 100 g water.
The quantity of barium chloride that is dissolved in water at 30 degree Celsius = 38.2 * [150/100] = 57.30 g.
The quantity of barium chloride that will be dissolved in water at 60 degree Celsius = 46.6 * [150/100] = 69.90 g
The difference between these quantities is the amount of barium chloride that can be dissolved by heating the barium chloride to 60 degree Celsius.
69.90 - 57.30 = 12.60 g. Therefore, 12.60 g of barium chloride can still be dissolved in the water by heating the water to 60 degree Celsius.
Answer:
We need add acid to prepare 0.15 acetate buffer with pH 3.7.
Explanation:
As we know that buffer solution is the combination of weak acid with strong base or strong acid with weak base.
We know that CH3COOH is weak acid .Acetate buffer is the combination of weak acid CH3COOH and conjucate base CH3COO- (from salt).
So we have to add acid to achieve the proper final pH value of mixture.We need add acid to prepare 0.15 acetate buffer with pH 3.7.
Answer: The hydroxide ion concentration in a solution is ![1\times 10^{10}M](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B10%7DM)
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
![HCl\rightarrow H^++Cl^{-}](https://tex.z-dn.net/?f=HCl%5Crightarrow%20H%5E%2B%2BCl%5E%7B-%7D)
According to stoichiometry,
1 mole of
gives = 1 mole of
Thus
moles of
gives =
moles of
![K_w=[H^+][OH^-]](https://tex.z-dn.net/?f=K_w%3D%5BH%5E%2B%5D%5BOH%5E-%5D)
![10^{-14}=[1\times 10^{-4}][OH^-]](https://tex.z-dn.net/?f=10%5E%7B-14%7D%3D%5B1%5Ctimes%2010%5E%7B-4%7D%5D%5BOH%5E-%5D)
![[OH^-]=1\times 10^{10}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1%5Ctimes%2010%5E%7B10%7DM)
Thus the hydroxide ion concentration in a solution is ![1\times 10^{10}M](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B10%7DM)