1. A 2.168 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 5.607 grams of CO2 and 1.148 grams of H2O are produced. In a separate experiment, the molar mass is found to be 136.2 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

2.A 6.210 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 10.34 grams of CO₂ and 3.388 grams of H₂O are produced.

In a separate experiment, the molar mass is found to be 132.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

3.A 0.5079 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate. The mass of the resulting AgBr is found to be 0.9007 g.

What is the mass percentage of bromine in the original compound?

C60-->CH4+CO3^2?

Give the complete balanced oxidation-reduction reaction occurring in acidic solution.

correct the mistakes in this statement

A vacancy is a point defect that occurs when an atom is missing from a lattice position. A perfect metal crystal would exhibit ductile behavior. Amorphous crystals have long range order which can be measured by x-ray diffraction. X-ray crystal structure determination and the iridescent colors in nacre, butterfly wings, and beetle exoskeletons are caused by similar phenomena that involves the transmission of visible light. Metals tend to be harder than polymers, ceramics tend to be stronger than polymers, and metals tend to be harder than ceramics. Diamond is a unique material that exhibits metallic bonding. One of its more unusual features is that although it has a very high electrical conductivity, it is a poor conductor of heat.

balance potassium permanganate and oxalate redox reaction

When the partial pressure of O₂ in venous blood is 30 torr, the saturation of myoglobin with O₂ is ______ while the saturation of hemoglobin with O₂ is ______.

a. 0.55, 0.91

b. 0.91, 0.55

c. 2.8 torr, 26 torr.

d. 0.91, 0.97

e. none of the above

please show your work, thanks!

what significance does electronic notation have to the study of plastics?

1. A hot solution of a particular compound was allowed to cool to room temperature. After waiting a few minutes, it was noticed that the crystallization had not taken place. Discuss two ways to induce crystallization.

2. What properties are necessary and desirable for a solvent in order that it is well suited for recrystallizing a particular organic compound?

3. Assume that 3.0 g of aniline and 4.5 ml of acetic anhydride are used in the preparation of acetanilide. What is the limiting reagent? What is the theoretical yield of acetanilide? What is? the percentage yields if 3.3 g of acetanilide is obtained?

4. The solubility of compound A in ethanol is 0.4 g per 100 ml at 0o C and 5.0 g per 100 ml at 75 o C. What is the minimum amount of solvent needed to recrystallize an 8.0 g sample of compound A? How much would be lost in the recrystallization?

5. Impure acetanilide was dissolved in hot water. The solution was filtered hot and the beaker of solution was immediately placed in an ice-water bath instead being allowed to cool slowly. What will be the result of cooling the solution in this manner?

A buffer contains 0.150M acetic acid and 0.105M in sodium acetate.

a) Calculate the pH of the buffer.

b) What is the volume of 6.0M NaOH must be added to raise the pH of 100.0 mL of the buffer by 1.5 pH units?

c) Calculate the pH when 2.0 mL of 6.0M is added to 100.0 mL to the buffer.

please show work. question is due before 11PM

When a lithium nucleus reacts with a proton according to the reaction 7Li + 1H -> 2 4He, 3.1 x 10^-29 kg of mass converted to energy. Calculate the energy released per mole of Li.

. Carcinogenic nitrosamines are produed from amines such as dimethylamine and nitrous acid according to the following mechanism: HNO 2 + HNO 2 → H 2 O + N 2 O 3 (fast, reversible) (CH 3 ) 2 NH + N 2 O 3 → (CH 3 ) 2 NHNO + + NO 2 - (slow) (CH 3 ) 2 NHNO + + → (CH 3 ) 2 NNO + H + (fast) (b) What is the molecularity of each step?

What are some of the advantages and disadvantages of using an ion trap and a mass analyzer?

If He(g) has an average kinetic energy of 4450 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?

Write the wavefunctions describing all 4 bonds in methane molecule using the VB theory.

1. Suppose the following reaction takes place: 2A+B+C----->products. The following observations are made: Halving the ]A] halves the rate of reaction, trippling the [B] has no effect f the rate of reaction, and tripling [C] increases the rate of reaction nine-fold. What is the overall order of the reaction?

Please explain in clear details, thank you!

1) Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures:

CO(g)+Cl2(g)?COCl2(g)

Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 459?C . At equilibrium, the concentrations were measured and the following results obtained:

What is the equilibrium constant, Kp, of this reaction?

2) In Part A, you were given the equilibrium pressures, which could be plugged directly into the formula for K. In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K.

Part B

The following reaction was performed in a sealed vessel at 753?C :

H2(g)+I2(g)?2HI(g)

Initially, only H2 and I2 were present at concentrations of [H2]=3.35M and [I2]=2.15M. The equilibrium concentration of I2 is 0.0500M . What is the equilibrium constant, Kc, for the reaction at this temperature?

Express your answer numerically.