Answer:
Explanation:
<em>Chlorine</em>'s atomic number is 17.
That means that it has 17 protons and 17 electrons.
Then, you have to write the electron configuration for the 17 electrons.
The<em> noble gas notation</em> is a short notation that uses the previous noble gas symbol (closed in brackets) and adds the new electrons, filling the orbitals in increasing order of energy, which you can remember using Aufbau rules.
Then:
- number of electrons: 17
- Previous noble gas: neon, which has 10 electrons.
- Then, you use [Ne] and add 17 - 10 = 7 more electrons.
- Since, the electron configuration of neon is 1 s² 2s² 2p⁶, the seven electrons that you have to add will occupy the orbitals 3s and 3p.
Result: [Ne] 3s² 3p⁵ ← answer
The relationship between Celsius and kelvin is that degrees Kelvin is equal to degrees Celsius + 273.15. That means that the freezing point of water (0°C) is 273.15° kelvin. This makes an additive relationship between the two quantities, so quantities such as the boiling point and freezing point of water are the same distance apart on the Kelvin scale (100 degrees). This means that kelvin has the same magnitude as Celsius.
Answer:
2.0 M
Explanation:
Step 1: Given data
- Mass of NaCl (solute): 2.93 g
- Volume of the solution: 0.025 L
Step 2: Calculate the moles corresponding to 2.93 g of NaCl
The molar mass of NaCl is 58.44 g/mol.
2.93 g × 1 mol/58.44 g = 0.0501 mol
Step 3: Calculate the molarity of the solution
Molarity is equal to the moles of solute divided by the liters of solution.
M = 0.0501 mol/0.025 L = 2.0 M