how does charcoal differ from graphene in its atomic structure?

Environmental health project. I am doing it on the effects of smoking and alcohol so which body system will it affect to? How does it affect the teeth, heart lungs, etc? Please start with a abstract with me. I need to write an abstract. One paragraph abstract. Thanks

According to the Hinduism, what are the four stages of life and which are the obligations associated with each?

(this is for a world relgions class but there is no option for it on subjects)

4. The student then titrated 25.0 mL of the same buffer with 0.1115 M NaOH. The observed data is below. Hand draw a graph of the data (on graph paper) and determine the concentration of the weak acid in the buffer? Vol of NaOH Added (mL) pH Vol of NaOH Added (mL) pH 0.00 4.91 11.00 10.32 1.00 4.97 12.00 10.99 2.00 5.04 13.00 11.26 3.00 5.11 14.00 11.44 4.00 5.2 15.00 11.57 5.00 5.29 16.00 11.66 6.00 5.4 17.00 11.73 7.00 5.53 18.00 11.79 8.00 5.72 19.00 11.84 9.00 5.99 20.00 11.89 10.00 6.66 21.00 11.91

5. What is the buffer strength from question 3 and 4 (i.e., the total of [HA] and [A- ])? 6. If the pH of the buffer (before it is titrated) is 5.70, what is the pKa of the weak acid?

You titrate 10.0 mL of 0.30 M acetic acid with 0.10 M sodium hydroxide.

a. What is the pH of the solution after you have added 10.00 mL of NaOH?
b. What is the pH of the solution at the equivalence point?

Use the data below from an electron impact mass spectrum of a pure compound to deduce its structure.

For ochem

Rank the boiling point of water at these following three places. Explain why?

A) Deat Valley, Elevation -285 ft, P=1.01 atm

B) New York City, Elevation 0 ft, P=1.00 atm

c) Laramie, WY, Elevation 7165 ft, P=0.75 atm

In column chromatography. what would happen if the elution solvent is too polar?

Partial Pressure:

a) Calculate the partial pressure of oxygen and hydrogen in a mixture of 35.0 g of oxygen gas and 11.5 g of hydrogen gas in a 2.0 L container at 35F?

b) Within a balloon, there are 3 types of gasses. The first gas is 6 moles in amount, the 2nd is 4 moles and the 3rd is 3.5. If a total pressure of 10 atm was felt by the balloon and labeled the 1st, 2nd, 3rd gas X, Y, Z, what is the partial pressure of each gas?

Pls show the steps. Thanks!

An organic acid concentration in a hard sample was determined by diluting a 15.00 mL sample of 200.00 mL solution. A 20.00 mL portion of the diluted sample reacted with 40.0 mL of 0.05417 M NaOH completed. The excess OH- was back titrated with 5.21 mL of 0.02154 M HCL. The concentration of the organic acid in the orginal sample is:

Answer is 1.370 M

The UV-vis spec of acetophenone shows a peak at around 242nm while trans-p-anisalacetophenone shows two peaks at 340 and 245nm. I just want to know how these peaks came to be, relating to orbitals and energy gaps.

Polyprotic acids contain more than one dissociable proton. Each dissociation step has its own acid-dissociation constant, Ka1, Ka2, etc. For example, a diprotic acid H2A reacts as follows: H2A(aq)+H2O(l)⇌H3O+(aq)+HA−(aq) Ka1=[H3O+][HA−][H2A] HA−(aq)+H2O(l)⇌H3O+(aq)+A2−(aq) Ka2=[H3O+][A2−][HA−] In general, Ka2 = [A2−] for a solution of a weak diprotic acid because [H3O+]≈[HA−].

Many household cleaning products contain oxalic acid, H2C2O4, a diprotic acid with the following dissociation constants: Ka1=5.9×10−2, Ka2=6.4×10−5. Part A Calculate the equilibrium concentration of H3O+ in a 0.20 M solution of oxalic acid. Express your answer to two significant figures and include the appropriate units.

Pure rotational Raman spectra of gaseous C₆H₆ and C₆D₆ yield the following rotational constants: B (C₆H₆) = 0.18960 cm^-1 and B (C₆D₆) = 0.15681 cm^-1. The moments of inertia of the molecules about any axis perpendicular to the C₆ symmetry axis were calculated as I (C₆H₆) = 1.4759 x 10^-45 kg/m² and I (C₆D₆) = 1.7845 x 10^-45 kg/m². Calculate the C-C, C-H and C-D bond lengths.

A 1.00 L solution contains 2.00 X 10^-4 M Cu(No3)2 and 1.2 x 10^-3 M Ethylenediamine (en). The Kf for Cu(en)2 2+ is 1.0X10^20 What is the concentration of Cu 2+ (aq) in the solution?

1) The average human body contains 5.70 L of blood with a Fe2+ concentration of 2.60×10−5 M . If a person ingests 12.0 mL of 16.0 mM NaCN, what percentage of iron(II) in the blood would be sequestered by the cyanide ion? (When species combine to produce a coordination complex, the equilibrium constant for the reaction is called is the formation constant, Kf.

For example, the iron(II) ion, Fe2+, can combine with the cyanide ion, CN−, to form the complex [Fe(CN)6]4− according to the equation

Fe2+(aq)+6CN−(aq)⇌[Fe(CN)6]4−(aq)

where Kf=4.21×1045.)

2) Consider a solution that is 1.5×10−2 M in Ba2+and 1.9×10−2 M in Ca2+.

Ksp(BaSO4)=1.07×10−10
Ksp(CaSO4)=7.10×10−5
What minimum concentration of Na2SO4 is required to cause the precipitation of the cation that precipitates first?

3) Calculate the solubility (in grams per 1.00×102mL of solution) of magnesium hydroxide in a solution buffered at pH = 12.
Calculate the solubility (in grams per 1.00×102mL of solution) of magnesium hydroxide in pure water.
How does the solubility of Mg(OH)2 in a buffered solution compare to the solubility of Mg(OH)2 in pure water?

4) Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction:
FeS(s)+6CN−(aq)⇌Fe(CN)4−6(aq)+S2−(aq)

5) A 115.0 −mL sample of a solution that is 3.0×10−3 M  in AgNO3  is mixed with a 225.0 −mL sample of a solution that is 0.11 M in NaCN. A complex ion forms.After the solution reaches equilibrium, what concentration of Ag+(aq) remains?   

A 5.5984 g sample of soil was analyzed for lead. The sample was digested in hot perchloric acid for 5 hours, cooled, filtered to remove insoluble silicates, transferred to a 250-ml volumetric flask and diluted to the mark with distilled water. A 50.00-ml portion of the resulting solution was treated with phosphoric acid (H₃PO₄) forming 0.0862 g of precipitate. What was the weight % of lead?

                  3 Pb²⁺ + 2 PO₄^3- ® Pb₃(PO₄)₂(s)