Chemistry Answers

Verify the following chemical equation is balanced

TiO₂ + 2C → Ti + 2CO

If you begin with 15.9 kilograms of carbon, how many moles of Ti can be produced?

1. In the winemaking industry, laboratory procedures are employed in determining the right concentration of wine for safety purposes. For example, to analyze the alcohol content of a certain wine, a chemist needs 1.00L of an aqueous 0.200 M K2Cr2O7 (potassium dichromate) solution. How much solid K2Cr2O7 must be weighed out to make this solution?

Which of the following correctly determines the mole fraction of 250. g sucrose (MM = 342 g/mol) dissolved in 1000mL of water?

why hex 1,2 diene is more stable than hex 1,5 diene

A mole of N2 has a pressure of 2.30 atm inside a 20.0 L vessel. What is the volume that the gas occupies if it is compressed to a pressure of 8.45 atm at constant temperature?

F2(g) (M=38.00 g/mol) effuses through a pinhole at a rate of 0.01287 mol/s. At what rate does N2O4(g) (M=92.02 g/mol) effuse at the same pinhole?

What is the mass of ethanol that must be combusted to generate 20.4 L of CO2 at STP?

A sample of air in a container was analyzed to contain 0.390 mol N2, 0.102 mol O2 and 0.0085 mol other gases. What are the partial pressures of these gases in the container if the total pressure is 754 mm Hg? 

Give the general pattern of the paramagnetic moments of lanthanoid ions with the help of graph.

A Particle of mass m in an one dimensional potential well represented by the following:

V(x)=−W=0|x|<a|x|>a

where W is a positive constant

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1. What will be the energy of the bound state(s)?

2. Comment about the values of W and a

3. How many bound states are possible?