The ideal weight (kg) = (- 150 cm height) x 0.650, south of ideal body weight (kg) = (- 150 cm height) x 0.648, this calculation method seems to be more suitable for the north and south of Chinese. Calculate the standard weight of children, a simple method is: 1 ~ 6 months...
Calculate the pH of a 0.25 M HCI solution. How would the pH of a 0.25 M acetic acid solution would compare to your calculate pH for the HCI solution? How do you find the acidity and basicity of a compound? The value of Ka for acetic acid, CH3COOH, is 1.80 x 10-5. Write the e...
In fact, eating these foods at this time is not only detrimental to relieving fatigue, but also has adverse effects on the body. Human food can be divided into acidic food and alkaline food. The determination of the acidity and basicity of food is not based on people's sense of taste, ...
Calculate the amount of grams of Na_2HPO_4 and NaH_2PO_4 to prepare 200 mL of a buffer with an 8.25 pH so the sum of the concentrations of HPO_4 and H2PO_4 ions is 0.5 M. Calculate the grams of solid Na_2HPO_4 that should be added to a ...
Now, there’s many kinds and levels of AI, and people confuse these and conflate them. The first kind of AI is just computers doing stuff that we try to do in our minds, like calculate what a parabola is, how fast a car is going to go, or how much money a bu...
1. The Acidity Constant Ka and Its Negative Logarithm pKa Let’s review some key principles of acidity constants to make sure we’re all on the same page. The acidity constant, Ka, is a measurement of the equilibrium between an acid, H-A and its dissociation to give H+ and its conjuga...
Acidity functionExcess acidityHydrated proton complexAqueous acidic mediumThis article proposes a new unconventional form of medium participation in the description of the acidity of strong acids in aqueous solutions, through proton and water concentrations, excluding the use of their activity coefficients....
3. What pH is considered to be neutral? 4. What is the difference in hydrogen ion concentration between a pH of 8 and a pH of 4? What is the measure of acidity or basicity of substance in biology? If a pH changes from 10 to 7, how much more acidic is the solution...
Make a statement relating hydrogen ion concentration to the acidity and basicity of solutions. What do the values 0.7 and 14 on the pH scale mean? Be specific regarding the relationship of H+ and OH-ions, as well as the exponent values. ...
Acid and BasesAn acid is a chemical substance that dissociates in water to give hydrogen ions while a base is a chemical substance that dissociates in water to release hydroxyl ions.PH is a quantitative measure of the acidity or...