The kinetic energy of a moving object is calculated through the equation,
KE = 0.5mv²
where KE is kinetic energy, m is mass, and v is the velocity. Substituting the known values in the problem above,
KE = 0.5(55 kg)(16 m/s)²
KE = 7,040 J
Thus, the kinetic energy of the skydiver is approximately equal to 7 kJ.
Answer:
The correct answer is option 1 "F(2-) "less than" C2(2+) "less than" O(2-) "less than" N(2-)".
Explanation:
Bond order is a term used in chemistry to identify the number of electrons involved in making the bonding between two or more atoms in a molecule. Bond order is equal to half the difference between the number of bonds in the atoms minus the number of antibonds. Therefore, the correct order of bond order from smallest to largest is as follows:
1. F(2-): equals to 0.5 (it has 8 bonds and 7 antibonds)
2. C2(2+): equals to 1 (it has 4 bonds and 2 antibonds)
3. O(2-): equals to 2 (it has 8 bonds and 4 antibonds)
4. N(2-): equals to 2.5 (it has 8 bonds and 3 antibonds)
Answer:
7.16 × 10⁻³ M
Explanation:
Let's consider the reduction reaction of copper during the electroplating.
Cu²⁺(aq) + 2 e⁻ ⇒ Cu(s)
We can calculate the moles of Cu²⁺ present in the solution using the following relations.
- 1 mole of electrons has a charge of 96486 C (Faraday's constant).
- 1 mole of Cu²⁺ is reduced when 2 moles of electrons are gained.
The moles of Cu²⁺ reduced are:
of Cu²⁺ are in 0.300 L of solution.
[Cu²⁺] = 2.15 × 10⁻³ mol/0.300 L = 7.16 × 10⁻³ M