Is there enough information to determine whether or not ABCD is a parallelogram? If so, explain whether or not it is a parallelogram

balance the half reaction in acidic conditions

VO²⁺_(aq)---> V³⁺_(aq)

NO₃^-_(aq)---> N₂O_(aq)

a technicion placed 2.5mol of NO(g) in an  empty 2.0L flask and allowed the contents to establish the following equilibrium. 

4NO(g)<---> 2N₂O(g) + O₂(g) + 197KJ

AT EQUILIBIRUM IT WAS DETERMINED THAT THERE WAS 0.58 MOL OF N₂O(g) present. 

what is the percent yield? 

part b. 

what is the equilibrium concentration of NO(g)?

part c. 

the equilibrium constant for this equilibrium is? 

the constant should be expressed in scientific notation is a.b $\times$× 10^-c

question 2. 

solid copper(II) sulfate is added to a flask containing water and then stoppered. the following equilibrium was established. 

CuSO4(s)<---> Cu²⁺(aq) + SO4^2-(aq)

when a small amount of a saturated solution of barium nitrate is added to the equilibrium system, the amount of solid copper(II) sulfate would ________(increase or decrease) as the system shifts to the _________ (left or right)

only choose one of the opitions to fill the blanks!

CO_(g) + H₂O_(g) <--->CO_2((g) + H_2(g) 

kc= 7.3

delta H= -41.2KJ

if the temperature of the system at equilibrium is increased, then the concentration of the H2(g₎ will _______ and the value of kc will_____

for the blanks choose one from the following 

- increase

-decrease

-stay the same 

question 2 

Solid copper(II) sulfate was added to a flask containing water and then stoppered. the following solubility equilibrium was established . 

CuSO_4(s) <---> Cu²⁺_(aq)+ SO₄^2-_(aq)

which of the following observations would indicate that equilibrium has been established?

1. the forward and the reverse reaction have stopped

2. the mass of the solid copper(II) sulfate is completely dissovled

3. the pressure of the system is constant

4. the mass of solid copper(II) sulfate remaining in the flask is constant

a technicion placed 4.0 mol of PO₂Br(g) in a 2.0L sealed container. the following equalibirum established

2PO₂Br(g)<---> 2PO₂(g) + Br₂(g) 

at equalibrium it was determined that the sealed reaction vessel contained 1.8 mol of Br₂(g) 

calculate kc for this equalibirum 

A TECHNICION PLAES 0.50 MOL OF NITROGEN MONOXIDE GAS AND 0.20 MOL IF CHLORINE GAS IN A 1.00L SEALED CONTAINER AT 100 DEGREES CELSUIS. THE FOLLOWING EQUALIBRIUM IS ESTABLISHED AT 4.5 MIN. 

2NO(g) + Cl₂(g) --->2NOCK(g)

the arrow is supposed to be meant as forward and reverse 

THE TECHNICION DETERMIBES THAT AT EQUALIBRIUM THERE ARE 0.30 MOL OF NOCL, 0.20 mol of nitrogen monoxide and 0.050 mol of chlorine gas. 

question 1 

calculate the percent yeild 

question 2 

calculate the equalibrium constant 

assuming this is a quanatiative reaction

the reaction is:

   NaSO_4(aq) + CaCl_2(aq) --> CaSO_4(s) + NaCl_(aq)

0.50mol/L of sodium sulfate solution is meaured and put into 4 150ml beakers and 4 different volumes of 0.50mol/L of calcium chloride solution are prepared in a graduated cylinder. the caclium chloride will be added to the sodium solfate solution which is in the beaker and stirred. 

find the limiting and excess reagents for each trial

trial  | volume  of 0.50mol/L of Na₂SO₄(aq) (mL)  |   Volume of 0.50mol/L CaCl_2(aq) (mL) | 

1)     |  50                                                         |   25

2)     |  50                                                         |   50

3)     |  50                                                         |   75

4)     |  50                                                         |   100

sour gas H₂S(g) can establish the following equalibrium system under certain conditions. 

note that S₂(g) is a violet coloured gas. both sour gas and hydrogen gas are colourless 

2H₂S(g) ---> 2H₂(g) + S₂(g)

state the effect each of the following stressers  will have on this system in terms of the colour of the system: darker violet, lighter violet, or no colour change to the colour of the system. 

THE FOLLOWING SYSTEM WAS HEATED 

H2(g) + I2(g) + 53kJ ---> 2HI(g) 

identify the effect of the temperature increase on the concentation of HI and on Kc of this system. 

choose either it decreases or increases for both 

Concentation of HI= 

Kc= 

question 2 

consider the following equalibrium 

BaS(s)--> Ba²⁺(aq) + S^2-(aq)

when Ba(NO₃)₂(aq) is added to this solution the equalibirum shifts to the ________ and the concentration of the sulfide ions___________ 

choose either right or left for the shift 

and choose decrease or increase for the concentration of ions

P.S THE ARROWS ARE SUPPOSED TO BE MEANT AS REVERSE AND FORWARD 

consider the following 

CO(g) + H2O(g)---> CO2(g) + H2(g) kc= 5.0

at equalibrium a 2.0 L container was found to contain 0.20 mol of CO2(g) , 0.30 mol of H2O(g) and 0.90 mol of H2(g).

The equalibirum amount of carbon dioxide is

question 2 

4HCl(g) + O2(g) ---> 2H2O(g) + 2Cl₂(g) kc= 357

An equalibirum mixture of the above system was found to contain the following concentratins: HCl(g)= 0.35mol/L, O2(g)= 0.078 mol/L and H2O(g)= 1.2mol/L. the equalibirum concentration of Cl₂(g) is?