Nitrogen trichloride I think
Answer:
16 g/mol
Explanation:
In CO2, it means we have 1 mole of carbon and 2 moles of oxygen.
However, we want to find the molar mass of just a single mole of oxygen.
Now, from tables of values of elements in electronic configuration, the molar mass of oxygen is usually approximately 16 g/mol.
In essence the molar mass is simply the atomic mass in g/mol
Answer:
3. 107 atm
Explanation:
First, we will calculate the moles of each gas by dividing its mass by its molar mass.
nCHCl₃ = 10.2 g/(119.38 g/mol) = 0.0854 mol
nCH₄ = 0.322 g/(16.04 g/mol) = 0.0201 mol
The total number of moles is 0.0854 mol + 0.0201 mol = 0.1055 mol.
The absolute temperature is 345°C + 273.15 = 618 K
We can find the pressure of the gaseous mixture using the ideal gas equation.
P × V = n × R × T
P = n × R × T / V
P = 0.1055 mol × 0.08206 atm.L/mol.K × 618 K / 0.0500 L
P = 107 atm
Answer:
Metals ionize by electron gain, non-metals ionize by electron loss while metalloids possess properties of both metals and non-metals
Explanation:
B. Lower elements have more energy levels
Explanation:
Ionization energy decreases down the group because lower elements have more energy levels. Therefore, the pull of the nucleus on the outermost shell electrons is not so great.
- Ionization energy is the energy required to remove an electron from an atom.
- It is a measure of the readiness of an atom to lose an electron.
- Down a group or family, atomic radius increases due to addition of more electronic shells or energy levels.
- As the atomic radius becomes larger, the ionization energy reduces.
- This is because of the increased shielding/screening effect of inner shell electrons on the electron to be removed from the nuclear attraction.
- This way, its takes a lesser amount of energy to remove them as shielding effects increases down the group.
Learn more:
ionization energy brainly.com/question/1971327
#learnwithBrainly
