Write down the components of four forces F1​,F2​,F3​and F1​along ox and oy directions as shown in the figure.

 

Find the net torque (in Nm) on the wheel in figure about the point O if a=10cm and b=25cm. Round off to the closest integer.

Consider the following reaction:

2SO2(g) + O2(g) ⇌ 2SO3(g)

Which of the following would not result in a shift towards an increase in production of SO3?

A. Increase in volume

B. Decrease in volume

C. Increase in the amount of SO2

D. Decrease in the amount of SO3

Tell which direction the equilibrium will shift for the following reaction,

2SO₂(g) + O₂(g) ? 2SO₃(g) ?H_r = -197.6 kJ

with the following stresses (shift left, shift right, no effect):

a. adding SO₂

b. adding SO₃

c. adding N₂

d. increasing volume of the vessel

e. remove some heat

f. removing some O₂

1. Consider the following equilibrium: H₂O_(g) + CO_(g) ⇄ H_2(g) + CO_2(g)

A closed container is initially filled with H₂O and CO. As the reaction proceeds towards equilibrium the

A. [CO] and [CO₂] both increase

B. [ CO] and [CO₂] both decrease

C. [CO] increases and [CO₂] decreases

D. [CO] decreases and [CO₂] increases

2. Consider the following equilibrium: 2SO_3(g) ⇄ 2SO_2(g) + O_2(g)

At equilibrium, the rate of decomposition of SO₃

A. Equals the rate of formation of O₂

B. Equals the rate of formation of SO₃

C. Is less than the rate of formation of O₂

D. Is less than the rate of formation of SO₃

3. Which of the following is true for all equilibrium systems?

A. The mass of reactants is equal to the mass of products

B. Addition of a catalyst changes the equilibrium concentrations

C. The concentration of reactants is equal to the concentration of products

D. The rate of the forward reaction is equal to the rate of the reverse reaction

Which one of the following will change the value of an equilibriumconstant?

a. changing temperature
b. adding other substances that do not react with any of thespecies involved in the equilibrium
c. varying the initial concentrations of reactants
d. varying the initial concentrations of products
e. changing the volume of the reaction vessel

Which one of the following will change the value of an equilibrium constant?

what is the only thing below that will shift this reaction equilibrium position to the right?

2SO2(g) + O2(g) --------><-------- 2SO3(g) delta H = -398KJ/mol

A) adding more sulfur triozide

B) adding more heat

C) increasing the pressure

D) removing oxygen gas

 Iron is extracted from which ore?

Im struggling with the solubility rules. If anyone can help. Thanks

Which gas is expected to be the most soluble in water?