Answer:
Q1) Distillation relies on evaporation to purify water
Explanation:
contaminated water is heated to form steam. inorganic compounds and large non-volatile organic molecules do not evaporate with the water and are left behind. The steam then cools and condenses to form purified water
What is the volume of an object if the density is 8g/cm^3 and has a mass of 16g? *
1 point
8mL
128mL
16mL
2mL
Answer:
I think the answer is 2mL.
Explanation:
i hope it help.
Consider this reaction at equilibrium:
2BrNO (g) → 2NO (g)+ Br2 (g)
Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance.
a. NO is added to the reaction mixture
b. BrNO is added to the reaction mixture
c. Br2 is removed from the reaction mixture
d. Pressure is increased
Answer:
a. NO is added to the reaction mixture ⇒ to the left
b. BrNO is added to the reaction mixture ⇒ to the right
c. Br₂ is removed from the reaction mixture ⇒ to the right
d. Pressure is increased ⇒ to the left
Explanation:
The reaction at equilibrium is the following:
2BrNO (g) → 2NO (g)+ Br₂ (g)
The left side is the reactants side (2 BrNO) and the right side is the products side (2 NO + Br₂).
a. NO is added to the reaction mixture
NO is a product, in the right side of the equation. If a product is added, the equilibrium will shift to the opposite side, to the left, to form more reactants and compensate for the addition.
b. BrNO is added to the reaction mixture
BrNO is a reactant, in the left side of the equation. If a reactant is added to a reaction at equilibrium, more product will be formed in compensation. Therefore, the equilibrium will shift to the right.
c. Br₂ is removed from the reaction mixture
Br₂ is a product, in the right side. If it is removed, the system will compensate for the remotion by forming more product, so the reaction will shift to the right.
d. Pressure is increased
Since both reactants and products are in the gas phase, the equilibrium is affected by pressure. If pressure is increased, the equilibrium will shift to the side of the reaction with the fewest number of moles. The reactants side (left) has 2 moles of BrNO while the products side (right) has 3 moles (1 mol NO + 1 mol Br₂ = 3 moles of gas). Therefore, the reactants side has the fewest number of moles, so the equilibrium will shift to the left.