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Explain why 7 minus negative 5 is 12?
7 - (-5) = 7 + 5 = 12 Taking away a negative number is defined as adding its absolute value.
Explain why the equation 4x plus 5 equals 4x - 1 has no solutions?
If you subtract 4x on each side, you get 5 = -1, which is false. Note that this doesn't depend on the value of x, so this is false for any value of x.
What is the difference between a face value and a value in 3508?
The face value of 3 is 3: the value of 3 is 3000The face value of 5 is 5: the value of 5 is 500The face value of 3 is 3: the value of 3 is 3000The face value of 5 is 5: the value of 5 is 500The face value of 3 is 3: the value of 3 is 3000The face value of 5 is 5: the value of 5 is 500The face value of 3 is 3: the value of 3 is 3000The face value of 5 is 5: the value of 5 is 500
How do you add 2 integers if they have different signs explain how to determine the sums sign?
The sign of the sum will be the same as the number with the greatest absolute value. -9 + 4 = -5 -4 + 9 = 5
What is the Absolute Value -5?
Absolute value of -5 is 5.
What is the PH value of potassium sulphate?
The pH value of potassium sulfate, K2SO4, is neutral, around 7. This is because potassium sulfate dissociates in water to release potassium ions (K+) and sulfate ions (SO4^2-) which do not significantly affect the pH of the solution.
What is the Ka for acetic acid CH3COOH?
The Ka for acetic acid (CH3COOH) is approximately 1.8 x 10^-5. This value represents the acid dissociation constant for acetic acid, indicating its strength as a weak acid. An acid with a higher Ka value will dissociate more readily in solution.
What is the advantage of knowing the pKa of an acid-base indicator?
Knowing the pKa of an acid-base indicator allows us to determine the pH range over which the indicator changes color, making it useful for determining the endpoint of a titration. This information helps in selecting the appropriate indicator for a specific titration and ensures accurate results.
How do you determine the pKa value of an organic compound for HPLC method?
the organic compound three kind normal, acid and basic compound for acid compound the pKa from 3 to 5, normal pKa around 7 and basic compound more than 7 also you can know the kind of organic compound from structure that you can see acidic or basic grope like carboxylic acid or amine.
What is the pKa of cholic acid and urea?
Cholic acid is a bile acid, a white crystalline substance insoluble in water, with a pKa of about 5.5. Urea is an organic compound with the chemical formula (NH2)2CO often found in the urine of animals, with a pKa of about 0.18.
A drug has pKa 5. at which PH it will be 99.9 percent ionized?
To determine at which pH a drug will be 99.9% ionized, we need to consider the Henderson-Hasselbalch equation. The pH at which a drug is 99.9% ionized can be estimated by finding the pH value that is one unit above the pKa of the drug. Therefore, in this case, the drug will be 99.9% ionized at a pH of 6.
How do you explain which 5 has the smallest value in 0.55?
Of course the first 5 from right. 0.55 = 0.50 + 0.05, according the first 5 from right has a value of 0.05 while the first 5 from left has the value 0.50 which is ten times the other right 5.
What is the Ka value for ammonium nitrate?
The Ka value for ammonium nitrate is zero because it does not undergo significant dissociation into ions in water. Ammonium nitrate is a strong electrolyte and dissociates into ammonium and nitrate ions completely in water.
Calculate the pH after mixing a buffer at pH 4 and 6?
The pH after mixing two buffers can be calculated using the Henderson-Hasselbalch equation, pH = pKa + log([A-]/[HA]), where [A-] is the concentration of conjugate base and [HA] is the concentration of the weak acid. Given pH of 4 and 6, the pKa can be determined and used in the equation to find the final pH value after mixing.
What is dissociation constant for adipic acid?
The dissociation constant, or pKa, of adipic acid is around 4.4. This means that adipic acid is a weak acid that partially dissociates in water to release hydrogen ions. The pKa value indicates the extent of ionization at a given pH.
Explain why 7 minus negative 5 is 12?
7 - (-5) = 7 + 5 = 12 Taking away a negative number is defined as adding its absolute value.
Will a negative number to the fifth power be a positive or a negative value explain?
Negative, because 5 is an odd number
