The total number of atoms in 7.10g of chlorine is 1.204 × 10²³atoms.
HOW TO CALCULATE NUMBER OF ATOMS:
- The number of atoms in a substance can be calculated by multiplying the number of moles in that substance by Avogadro's number as follows:
- no. of atoms = no. of moles × 6.02 × 10²³ mol-¹
- The number of moles in 7.10g of Cl is calculated as follows:
no. of moles = mass ÷ molar mass
no. of moles = 7.10g ÷ 35.5g/mol
no. of moles = 0.2mol
no of atoms = 0.2mol × 6.02 × 10²³
no. of atoms = 1.204 × 10²³atoms.
- Therefore, the total number of atoms in 7.10g of chlorine is 1.204 × 10²³atoms.
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Answer:
Dynamic equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction:
Explanation:
Reaction quotient is the ratio of product of concentrations of products to product of concentrations of reactants at any time.
The same ratio at equilibrium (when rate of forward reaction becomes equal to rate of backward reaction) is equilibrium constant.
when Q < Kc, a forward reaction is favored.
When when Q > Kc, a backward or reverse reaction is favored
So the first statement that
a) A reaction quotient (Q) larger than the equilibrium constant (K) means that the reaction will favor the production of more products: false
b) No the rate of forward and backward reaction are equal.
c) c. Dynamic equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction: True
d) Dynamic equilibrium indicates that the amount of reactants and products are equal: This could be static equilibrium but not dynamic.
Answer:True
Explanation:
Light year is the unit of distance and not a unit of time.
Light year is used to measure astronomical distances.
It is defined as the distance which light travels in one year.
The distance which light travels in one year is around 9.46 trillion kilometers
Thus 1 light year =
km.
Thus the given statement that A light-year is the distance that light travels in one year is true.