To calculate the new pressure, we need to relate pressure with the temperature and the volume of the system. For simplification, we assume that it is an ideal gas so we use the equation PV = nRT where nR is a constant term. We calculate as follows:
P1V1/T1 = P2V2/T2
800(5.0) / 223.15 = P2 (7.0)/310.15
P2 = 794.21 mmHg
It's good. it keeps us from burning and it provides nutrition for plants
C burning
Because melting is incorrect lol
The number of moles of H atoms in 15.2 grams of pure ice is 0.850 moles
The number of moles of O atoms in 15.2 grams of pure ice is 13.50 moles
<h3>What is an atom?</h3>
An atom is a smallest indivisible particle of a chemical element that is capable of independent existence.
- Pure ice contains the H2O molecules and the molar mass of H2O is 18.02 g/mol
Using the relation:
- number of moles = mass/molar mass
The number of moles of H2O = 15.2 grams/18.02 g/mol
number of moles of H2O = 0.8435 moles
If the atomic mass of H and O are as follow:
- the atomic mass of H atom is = 1.00784 g/mol
- the atomic mass of O atom is = 15.999 g/mol
Then:
the number of H atoms in 15.2 grams of pure ice = mass of H atom × molar mass of H2O.
the number of H atoms = 0.8435 mol × 1.00784 g/mol
the number of H atoms = 0.850 moles
the number of O atoms in 15.2 grams of pure ice = 0.8435 mol × 15.999 g/mol
the number of O atoms = 13.50 moles
Learn more about atoms here:
brainly.com/question/25832904
Answer:- Chlorine(Cl)
Explanations:- Electron affinity is the amount of energy released when an electron is added to an element in it's gaseous state. Electron affinity increases in a period on going left to right as the size of the element decreases and it's effective nuclear charge increases and this facilitate an element to accept the electron.
The elements mentioned here in the question belongs to the same group and out of these, chlorine is on the right most side and so it is correct choice.
Hence, Chlorine(Cl), because it is a halogen with a high effective nuclear charge is the correct choice.