You have a stock solution of 1.0% m/v concentration and you wish to use it to prepare 50.0 mL of a 0.25% solution. Explain the calculations involved in performing this dilution.
-what is the starting
I thought it was 2 NO3s, and then 3 more, resulting in 5 NO3s. My friend told me it was 6 because its 2 NO3s, then multiplied by 3.-Coefficients in chemical equations are multiplicative.
1 Pb(NO3)2 m
NH4SH(s) yields NH3(g) + H2S(g) is the equation.
When solid NH4SH is placed in a closed flask at 28 degrees C, the solid dissociates according the above equation. THe total pressure of the equilibrium
Using the spdf notation, write the electron configurations for atoms of chromium and iron, two of the major components of stainless steel. (Type your answer using the format 1s2 2s2 for 1s^2 2s^2.)
A 44.0 gram sample of an unknown metal at 99.0 oC was placed in a constant-pressure calorimeter containing 80.0 g of water at 24.0 oC.The final temperature of the system was found to be 28.4 oC.Calcul
Which one is more acidic?-no way acetic acid (CH3COOH) is a very weak acid compared to H2SO4
if u know ionic equilibrium sulfuric acid dissociates completely in water and acetic acid doesnt
and the di
how do i calculate the pH of a weak acid? I was doing ICE for the equations but Im getting the same answer for 1&2 and then 3&4...
1) 1.0x10^-1: 5mL of 0.10M HA
2)1.0x10^-2: 1mL of 0.10 M HA +9mL H20
I have a 79.6% as my grade in Chemistry right now. I have one lab to be added in and extra credit and that will be my official grade in the class. A B- in the class is an 80%.
Labs are weighted 20% o
a)CH3-CH(Ch2)(Ch3)-Ch2-Ch(Ch3)-Ch3
b) Ch3-C(Cl)(Ch3)-ch2-ch3
c) Ch3-ch2-ch(ch3)-ch3
d)Ch3-ch2-ch(C2h5)-Chch3-Ch(Ch3)2
what i think
a) 2, 4-dimethylhexane
b) 2 –methyl-chlorobutane
c) 2-methylbutane
This is a question I have on my titration lab between NaOH and Oxalic Acid.
I am supposed to find the molarity of Oxalic acid (H2C2O4) based on what I know about the base NaOH, but I dont think I have
Ethanol, C2H6O, is added to gasoline to produce E85, a fuel for automobile engines. How many grams of 02 are required for the complete combustion of 421 g of ethanol?
And then it gives this equation:
in liters using the equation A=MA X V
or
MA =number of moles of A/ number of liters of solution, V? Thanks-How many moles of NaOH are there in 7.0 mL of 6.0M NaOH?
in liters using the equation A=MA
Calculate the number of grams in 1.77 mol of NO2
N*1=14
O*2=32
F.W.= 46
1mol/46g x 1.77 = 0.038g of No2
Is that correct?-FW = 46 g/mole
1.77 moles x (46 g / mole) = 81.4 g-are the moles black or
Use the Henderson-Hasselbalch equation. pKb NH3= 4.75
Please show all work!! Thanks a bunch! :D-pOH= pKb+lg([NH4(+)]/[NH3])= 4.75+lg(0.45/0.75)= 4.53
pH= 14-pOH= 9.47
I hope this helps and feel fre
