General Chemistry Answers

Calculate the pressure in a 212 Liter tank containing 23.3 kg of argon gas at 25°C? ( atomic weight Ar - 40 )

For each of these pairs of half-reactions, write a balanced equation for the overall cell reaction and calculate the standard cell potential, E^0cell.

A. Half-reactions: Cd^2+(aq) + 2e^- —> Cd(s) Cr^2+(aq) + 2e^- —> Cr(s)

Cell reaction:

E^0cell

B. Half-reactions: Fe^2+(aq) + 2e^- —> Fe(s) Br2(g) + 2e^- —> 2Br^-(aq)

Cell reaction:

E^0cell

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A sample of the transition metal scandium contains 7.42 x 10²¹ atoms. How many moles does the sample contain?

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Some students believe that teachers are full of hot air. If I inhale 2.20 litres of gas at a temperature of 18 degrees c and it heats to a temperature of 38 degrees c in my lungs, what is the new volume of the gas

Suppose 47.6g of sodium iodide is dissolved in 350.mL of a 0.80 M aqueous solution of silver nitrate.

Calculate the final molarity of iodide anion in the solution. You can assume the volume of the solution doesn't change when the sodium iodide is dissolved in it. Round your answer to 1 significant digit.

What pressure will be exerted by 25 g of CO2 at a temperature of 25 degrees celsius and a volume of 500 ml

What numerical value of the gas content, R, is used to solve this problem. Explain your answer.

Explain why the structure of phospholipids are ideal for the structure and function of the cell membrane.