Answer:
1) Increase temperature
2) Decrease temperature
3) Increase concentration of reactants
4) Increase pressure
5) Decrease pressure
Explanation:
Le Chatelier's Principle Fundamentals states that a chemical reaction at equilibrium that undergoes changes to pressure, temperature, or concentration, this will cause the equilibrium to shift in the opposite direction to offset the change.
1) Increase temperature
2) Decrease temperature
3) Increase concentration of reactants
4) Increase pressure
5) Decrease pressure
Answer:
Explanation:
Mass percent is defined as the mass of an element divided by the sum of masses of all the elements multiplied by 100. It is generally used to define the concentration. It does not depend on concentration.
It is given as;
Mass percent = (mass of an element / Total mass of the compound ) × 100
Mass of compound (alloy) = 78.2 g copper + 103.5 g zinc +2.8 g lead = 184.5 g
(a) Cu
Mass of Cu = 78.2
Mass percent = (78.2 / 184.5) * 100 = 42.38%
(a) Zn
Mass of Zn = 103.5
Mass percent = (103.5 / 184.5) * 100 = 56.10%
(c) Pb
Mass of Pb = 2.8
Mass percent = (2.8 / 184.5) * 100 = 1.52%
Answer:
The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. ... In general, substances expand or contract when their temperature changes, with expansion or contraction occurring in all directions.
