Recent content by Nanu Nana

Two graphs are given But i don't know how to explain each of them?? first one is curved because there is not enough substrate maybe ??

Homework Statement There is a reagent given . NaOH with concentration of 0,32 mol/ L HOw to prepare it ? it says dilute 1 part by volume of solution Naoh with 4 parts by volume of redist.water ?? (Neglect the total volume that you need , it's not important ) just the process to make it...

Not really . I just wanted to know if my calculation was correct or not

thank you for your answer

Significant figures doesn't really matter here I think

Homework Statement In this experiment we will create a standard stock solution from lyphochek serum. The concentration of proteins in serum Lyphochek is 6,8 g / dl. Pipette 1.36 mL Lyphochek serum in a 25 mL volumetric flask and dilute with physiological water. Calculate the standard stock...

Yeah thank you very much

Yes Ac- came from Sodium acetate but on second case we added strong base NaoH . Naoh completely deprotonate weak acids .

Ac- is conjugate base and HAc weak acid on second one HC03- = acid c032- = conjugate base

The following buffer problem is solved by my teacher . 300 ml ph =9.90 c= ca+cb We're going to use NaHCO3 and NaOH ph = 9.90 = pka - log nHCO3-/ n CO32- pka = 10.30 nHCo3-/ n co32- = 2.51 n HCO3- +n co32- = 0.500 x 300 ml = 150 mmol 2.51 n co32- + n co32- = 150 nco32- = 150/ 3.51 =42.7 mmol How...

He used the total mol

But my teacher used 0.01 mol for HAc last year . Thats why i 'm confused

Homework Statement So I have prepare a buffer solution of 100 mL with ph of 4.00 .I have to use acetic acid and NaAc (sodium acetate ) to do so . The sum of the concentration of weak acid and its conjugate base is equal to 0.10 M ca + cb = 0.10 M How much volume of acetic acid and NaAc should...

The acceleration of vertical component of the tension and acceleration of tension is same ?

Gravity wins