Physical Sciences Break 1.0

Ohm’s Law

If the physical conditions remain constant, the voltage across a resistor is directly proportional to the current through it. V ∝ I V = kI k = R = resistance V = IR The physical conditions are temperature, pressure and humidity etc. E.g.1 When a filament lamp is switched on, the most notable physical factor…

ELECTRIC FIELD AND ELECTRIC MOTOR

ELECTRIC FIELD AND ELECTRIC MOTOR.

Calculating the Equilibrium Constants

Calculating Kc from Known Equilibrium Amounts Write the equilibrium expression for the reaction. Determine the molar concentrations or partial pressures of each species involved. Subsititute into the equilibrium expression and solve for Kc. Example: Calculate the value of the equilibrium constant, Kc , for the system shown, if 0.1908 moles of CO2, 0.0908 moles of H2, 0.0092 moles of…

The nature of reactants

Aim To determine the effect of the nature of reactants on the average rate of a reaction. Apparatus You will need the following items for this experiment: Oxalic acid ((COOH)2), iron(II) sulfate (FeSO4), potassium permanganate (KMnO4) and concentrated sulfuric acid (H2SO4) a spatula, two test tubes, a medicine dropper, a glass beaker and a glass rod. Method Warning: Concentrated H2SO4 can cause…

Ohm’s Law

ELECTRIC FIELD AND ELECTRIC MOTOR

Calculating the Equilibrium Constants

The nature of reactants

Grade 10 -Reaction in Aqueous solution