General Chemistry Answers

Atmospheric pressure on the peak of Kilimanjaro can be as low as

0.20 atm. If the volume of an oxygen tank is 10.0L, at what

pressure must the tank be filled so the gas inside would occupy a

volume of 1.2 x 103L at this pressure?

An aqueous solution of HCl is added to an aqueous solution of Ca(OH) 2 and a reaction occurs. 8.9x10 -

6 mol of (OH – ) ions are measured in the 750mL solution. Remember, Molarity = mol/L. Calculate the

concentration of the H + ions. Is the solution more acidic or basic?

An aqueous solution of H 2 S is added to an aqueous solution of NaOH and a reaction occurs. 3.7x10 -

4 mol of OH –1 ions are measured in the 550mL solution, calculate the number of moles of H 3 O +1 ions.

Remember, Molarity = mol/L. Calculate the concentration of the H + ions. Is the solution more acidic

or basic?

An aqueous solution of HF is added to an aqueous solution of K(OH) and a reaction occurs. The

concentration of H + ions is 2.68x10 -1 M. Calculate the concentration of the (OH) - ions. Is the solution

more acidic or basic?

An aqueous solution of H 2 (CO 3 ) is added to an aqueous solution of Li(OH) and a reaction occurs. The

concentration of (OH) - is 3.75x10 -5 M. Calculate the concentration of the H 3 O +1 ions. Is the solution

more acidic or basic?

An aqueous solution of HCl is added to an aqueous solution of Na(OH) and a reaction occurs. The

concentration of H + ions in the solution is 1.0x10 -5 M, calculate the concentration of the OH –1 ions. Is the

solution more acidic or basic?

III-Please determine the type of chemical bonding of each compound

9.          Al(OH)₃                     

10.         AgCl               

11.         S₂Cl₂                    

12.         XeF₄                             

13.         NaSO₄                     

14.         CF₄                               

15.         PBr₃                             

A carnot engine operated between two temperature reservoirs mainted at 493.15K and 298.15K, respectively. If the desired output of the engine is 20.00kW, find the heat transfer to the low temperature reservior

How many grams of glucose (C6 H12 O6) are needed to prepare 800.0 g of a 5.0% glucose solution?

Thiocyanic acid (HSCN) has a pK_a of 4.0.

In what form would it exist in a solution of pH 0.0?