how come the answe of -log is 9.84 , can anyone solve that for me?? (4.17...
Hi can someone show me how to solve these Cinnamic acid is obtained from oil of cinnamon. 125 millimoles of HCI were added to a solution containing 0.2 moles of a cinnamic acid and 0.3 moles of its conjugate base. After mixing, the pH of the solution was found to be 4.17. What is the pK, of cinnamic acid? A) 4.44 B) 4.17 C) 3.90 D) 4.93 E) 4.66 The digestive enzyme pepsin is secreted by stomach cells into an...
Can anyone explain these formulas to me? They are for the propagation of uncertainty (with y = final result and ey = the error of y). I am mostly unsure about the use of natural log, and how exactly to use them when trying to find error - an example would be much appreciated. 1 ex ey-In 10 x y = log x х 0.434 29- _ = 10% oy ー= (In 10)ex 2.3026 ex -
I have no idea how to solve these types of problems. Can anyone help me out? If n=20, μ=15, =20 and S=10, to do a one-sided hypothesis test with significance level, α=1%, you will read a t-value table of:
Can anyone tell me how to can the -3 and +5 on the of N? I know -3 to +5 is oxidized. But I don't know where is -3 and +5 come from. Same question how do you get 0 and +4? -3 +1 +1 +5 -2 NH3(aq) + 20%(9) ► HNO3(aq) + H20(1) The oxidation state of the nitrogen atom is – 3 before the reaction and +5 after the reaction. That means the nitrogen atom is oxidized. +4...
Hello, Can anyone here help me out understand how to solve this problem (Solution has been provided) Thank you: Question: Answer: О.it F (A,B,C,D): Zm (1,4, 5, 7, 9, 12, 13 mplemen using a 4 t-1 MuX, MSD as selectorts. use à bok to vepresent Mux. 5 point) CD- 4 to1 I,
Can anyone help me with this Linear Algebra question? dy =1 +1 dt X-- Solve the system: 5.) dx dy 2y=e + dt d
im really confused can anyone tell me if i answered the highlighted question right?? thank you! Equations: pH = -log [H:04] POH --log [OH-] pH + POH = 14 K [H3O+] [OH') - 1x 10-14 Give two methods of determining the pH of a solution 1) pH meter 2) pH paper a) What is the pH of a 0.0012 M NaOH solution? NaOH →Nat +OH show your work [OH - ] - [NnOH] = 0.0012M POH = -log[OH-] - log...
can anyone solve this for me, python? Create a conditional expression that evaluates to string 'negative' if user_val is less than 0, and non-negative otherwise. Sample output with input:-9 -9 is negative 1 user_val - int(input) 3 cond_str. 4 if user_val < 7 print(user_val, 'is', cond_str) Run
Can anyone solve me number 15 16 17 18 19 and 20 please! 15. Σ 2η η1 16. Σ η E 2n' 1 και 3vn 10η +3 Σ 12" 4n' -1
Can anyone please help me solve this and include the steps on how to do it? Thanks! 7. An electron with velocity -4.10m/s enters a region with the uniform electric field E 12,0002 N/C. Calculate the deflection of the electron after it has traveled 2 cm in the î direction