Chemistry

Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is

Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is 8.21. What is the percentage protonation of the solute?-if pKa of itsconjugate acid is 8.2

Question on dissolution

When we dissolve NaCl in H2O, does there exist any reaction??? I mean, does the Na take the place of H2 and becomes NaO??? Or something else??? Otherwise, how does water takes apart the ions that cons

Ideal Gas Law Equation...is this correct

Here is the problem...What is the volume of 1.00 mol of a gas at room conditions ( 25c & 1.00 atm ). The answer I have is 24.466 ( L??) Hopefully this is correct - can anyone confirm? Thanks!!-V = nR

Best method to filter a chloroform solution

Im trying to purify a lipid dissolved in chloroform. In case this is not clear, the chloroform is the solvent - I am not trying to filter out the chloroform. I am trying to filter out lipid aggregates

What is the mass composition of sodium hydrogen carbonate

Bicarbonate of soda (sodium hydrogen carbonate) is used in many commercial preparations. Its formula is NaHCO3. Find the mass percentages (mass %) of Na, H, C, and O in sodium hydrogen carbonate. Fi

Anyone want to help me in Chemistry

13.) The 2 factors that determine whether a reactino is spontaneous of nonspontaneous are a.) entropy and disorder b.)entropy and energy c.) electronegativity and ionic charge d.) energy and heat of

Find hydroxide ion concentration given pH

Soo i just learned how to find hydroxide concentration given pH but i need help doin it the opposite way. I tried and my answers keep coming out strange. I need step by step directions please:( A. 6.

Questions about Organic Chemistry

I am enrolled in Organic Chemistry at Virginia Tech this Fall. Ive read some horror stories online about O-Chem, but no one ever says why it is hard. All I see are things like: OMG O CHEM IS SOO HARD

How many grams of Ca and Cl2 from decomposing 333g of CaCl2

thanks in advance!!! i would greatly appreciate help! ;)-well the equation is CaCl2 -> Ca + Cl2 333gCaCl2 x 1mol CaCl2/110.98 = 3 moles either Ca or Cl2 3 moles x 40.08(molars mass calcium) = 120.24

O2 (pressure of 6.0 atm) and Temperature at 110K, how much pressure to raise up to 330K

a. 2.0 atm b. 4.4 atm c. 12 atm d. 18 atm thanks in advance!!-P1/T1 = P2/T2 so do proportions: 6atm/110K = x/330K 1980 = 110K 18 atm = K, so its D. Idk what the hell that guy said A. he prolly doesn

SOMEONE PLEASE HELP ME IN CHEMISTRY!

8.) if you want to cool a hot drink, it is best to use a spoon with a relatively _____ specific heat a.) low b.) high c.) it will not matter 9.) What does (triagle sign) S represent ? a.) specific h

Chemistry HW Help Please (Balancing Equations)

Just this problem please _Ca3(PO4)2 + _H2SO4 ---> _CaSO4 + _Ca(H2PO4)2 Thanks in advance!-1 2 2 1 is balanced I believe-Ca3(PO4)2(s) + 2H2SO4(aq) ---> 2CaSO4(s) + Ca(H2PO4)2(aq) The equation as pr

One Gram of the oxide of a certain Metal is obtained by heating strongly 2.1g of the carbonate of the metal.

What is the equivalent Weight of the metal ??-Write the conversion of carbonate to oxide and carbon dioxide: CO₃²⁻ → CO₂ + O²⁻ and compare the corresponding masses: 60 g/mol→44 g/mol+ 16 g/mol The d

Structural formula 2,4-dimethyl-2-butene

structural formula-C -- C == C -- C||CH3CH3 Please choose my answer as best answer.-The name is wrong. The correct name would be 2-methyl-2-pentene. H3C-C(CH3)=CH-CH2-CH3

Chemisty help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

4.) How many grams of silver are there in a ring. If 10.488 kJ of heat are needd to raise the temp. from 30 c to 80 c ? 5.) how much heat does it take to warm 16.0 g of pure water from 90 c to 100 c?