Chemistry Answers

Addition reaction of carbonyl compounds

Water H2o

The arithmetic signs of qrev denote the loss heat by the of system and the gain of heat by the surrounding. since Tsys > Tsun in this case the the entropy change for the surroundings will be greater than that will give a por so the sum ASsys and ASsun OF positive value For ∆SunivThe arithmetic signs of qrev denote the loss heat by the of system and the gain of heat by the surrounding. since Tsys > Tsun in this case the the entropy change for the surroundings will be greater than that will give a por so the sum ASsys and ASsun OF positive value For ∆Suniv

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1) As a group, place each cotton ball in each beaker of equal amount of propanol, acetone (propanone), and water. Squeeze to remove excess liquid. 2) Wipe or dab the cotton balls in the appropriate box on the loose paper at the same time. 3) Observe the rate of evaporation for each liquid. 4) Record your observations here.

14.Calculate the energy required to remove the electron from a hydrogen atom in itsground state.

When 0.344 mol of HCl is combined with enough water to make a 450.0 mL solution, the concentration of HCl is ________ M.

Question 8 options:

1) 

7.64 × 10^-4

2) 

0.155

3) 

1.31

4) 

0.764

5) 

0.344

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^0 cell

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

Cell reaction:

E^0cell

A lead (Pb) pellet having a mass of 26 point 47 g at 89.98 degrees celsius was placed in a constant pressure colorimeter of negligible heat capacity containing 100.p ml of water the water temperature rose from the 22.50 degrees celsius to 23.17 degrees celsius what is the specific heat of the lead pellet?