radon424

Which type of titration gives a basic pH at the equivalence point?

Does this type of titration give clues about the source of the acids present?

Write the empirical formula corresponding to each of the following molecular formulas:
(a) Al2Br6              (b) C8H10               (c) C4H8O2
(d) P4O10             (e) C6H4Cl2             (f) B3N3H6

I 3x-5 I = I 3x-4 I

there is more than one solution separate them with commas

You are operating a drone delivery business. You can expand the business by buying new drones which will cost $53,684 which will increase profits by $7,011 per month. What is the payback period in months rounded to the nearest integer?

Use the metric converter to convert 400 grams to kilograms

How many ounces are in 2 liters?

Convert using the dimensional analysis method 

O CH3 CH3 CH3

I I I I

1. H3C - - -NH 2. H3C - - - 3. H3C ------ ------- -------OH 4. H3C------- ------O-----------------------CH3

I I I I

CH3 CH3 CH3 CH3

For each, Identify the functional group in the following molecule: Identify the appropriate group of atoms by selecting each atom individually on the canvas and assigning them a map number of 1 until all atoms are mapped. To do this, right-click on an atom and choose Atom Properties. (Mac users: Use an equivalent for right-clicking.) Then, clear the check mark to enable the Map field before entering a value.

2. Determine the family to which the molecule belongs.

Ketons, Alcohols, Carboxylic acids, Esters, Aldehydes, Ethers, Amines

3. Professor Frink suggests that you brush your teeth with toothpaste containing NaF. Use molecular orbital arguments to help Professor Frink predict which has the longer bond length, . (5 marks)

Bond length

Assuming that KA is 1.85×10 to the -5th for us the trigger acid calculate the pH at 1/2 the quiver lens point at the equivalence point for saturation of 50 ML

What is the IUPAC name of CH3CH2CH(OH)CH2CH2CH3

I am not sure how to do this.

Answer with the correct number of significant digits and with the correct units.

• In one litre of helium gas at 25 °C, there are 0.04 moles of helium. At the same temperature and pressure, how many moles of carbon dioxide would there be in 0.5 litres?
• If there are 0.02 moles of argon gas in a 0.4 litre container, at a pressure of 100 kPa , how many moles of oxygen would there be in a 0.8 litre container at the same temperature and pressure?
• Consider what you know about Kinetic Molecular Theory and Avogadro's hypothesis. If you were to blow up a balloon all the way and then take it into a colder environment, what would happen there?
• Assume that at a given temperature, there is 5.6 g of argon gas in a 3.29 litre volume. How much mass of O2(g) would there be at the same temperature in the same volume?

7. San Diego State has a student population of 33,527. The University of Texas has 17,786 more students than San Diego State. UCLA has 8,074 less students than Texas. What is the total population of UCLA? Draw a tape diagram to model.

Draw molecular orbital of methyl anion

Please explain and show every step in detail ........

Consider the reaction:

H2 (g) + O2 (g) ⇌ H2O2 (l)             

At 100K 0.345atm hydrogen gas and 0.550atm oxygen gas are initially charged in reaction vessel.  At equilibrium 0.220atm of hydrogen gas remains, calculate Kp for the reaction.

Your answer must include an ICE table, the equilibrium expression and equilibrium reaction.........

2-pentanol to 2- pentanone

Please show every step in detail

Consider the reaction:

H2 (g) + O2 (g) ⇌ H2O2 (l)             

At 100K 0.345atm hydrogen gas and 0.550atm oxygen gas are initially charged in reaction vessel.  At equilibrium 0.220atm of hydrogen gas remains, calculate Kp for the reaction.

Your answer must include an ICE table, the equilibrium expression and equilibrium reaction.

A gas is confined to a cylinder under constant atmospheric 
pressure, as illustrated in Figure 5.4. When the gas undergoes 
a particular chemical reaction, it absorbs 824 J of heat from 
its surroundings and has 0.65 kJ of P–V work done on it by 
its surroundings. What are the values of ∆H and ∆E for this 
process?

what are isotopes? how are they related with the mass number?

1. Two main-group elements, X and Y, are in the same period. If X has a smaller electronegative value than Y, is X to the left or right of y in the periodic table? (Assume electronegativity is consistent with the periodic trend). Explain how you made your decision. [2 marks]

The density of octane is 0.703 g/mL. What mass (in g) will a 0.8128 gallon sample of octane have?

A 0.2121-g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was collected in a solution of barium hydroxide. Calculate the percentage of carbon in the sample if 0.6006 g of BaCO3 was formed.

1. During the titration of an HcIO4 solution with 0.1032 M NaOH, quantitative analysis student Alcohol became distracted and overshot the end point. A fellow student, I. M. Smart, suggested that he simply record the present volume of NaOH added and titrate the excess with a standard acid solution. If the original sample volume was 25.00 ml, the volume of NaOH added was 28.06 ml, and it took 3.47 ml of 0.1094 M HCl to back titrate the naOH, calculate the molar concentration of the original HclO4 solution.

Write the electron configuration and the Lewis symbol
for N3-, Ca2+ and for S2-

Calculate the molarity of each solution. a. 0.38 mol of LiNO3 in 6.14 L of solution b. 72.8 g C2H6O in 2.34 L of solution c. 12.87 mg KI in 112.4 mL of solution  

A solution of 0.150 mole fraction of glucose and 0.850 mole fraction of water. What's the molality?

Kekule valid structure

6. Calculate the formal charge of all nonhydrogen atoms for the given structure. 

7. Convert the following Kekule structure to a valid skeletal structure. }

the correct answer is (d) 235 kj, I just don't know why, could provide a step by step explanation of how to get the answer?