Answer:
The temperature is 298.9K = 25.75 °C
Explanation:
Step 1: Data given
Volume of the flask = 1.00 L
Number of moles oxygen = 0.0400 moles
Pressure = 0.981 atm
Step 2: Calculate the temperature
p*V = n*R*T
⇒with p = the pressure of oxygen gas = 0.981 atm
⇒with V = the volume of the flask = 1.00 L
⇒with n = the number of moles of oxygen = 0.0400 moles
⇒with R = the gas constant = 0.08206 L*atm/mol*K
⇒with T = the temeprature = TO BE DETERMINED
T = (p*V) / (n*R)
T = (0.981 atm * 1.00 L) / (0.0400 moles * 0.08206 L*atm/mol*K)
T = 298.9 K
The temperature is 298.9K = 25.75 °C
Theories are ideas explaining something general principles independent of the thing.
A mixture contains 2 or more substances mixed together but a compound is 2 or more different atoms chemically bonding together
electrons in the outer shell have the lowest ionization energy. (not even gonna consider the quantum model which does funny things with d-sublevel). Highest ionization energy in descending order is:
Ar = 1520.6
Si = 786.5
Al = 577.44
Na 495.8
Answer:
Elements with low ionization energies.
Explanation:
The ionization energy of an atom reffers to the amount of energy that is required to remove an electron from the gaseous form of that atom or ion.
The greater the ionization energy, the more difficult it is to remove an electron. The ionization energybis one of the indicator that shows the reactivity of an element. Elements with a low ionization energy such as metals are usually reffered to as a reducing agents and form cations, this give metals the tendency to
give away their valence electrons when bonding, whereas non-metals tend to take electrons.
Metallic elements have different properties such as shiny, heat and electricity conductivity . They are malleable and ductile Some metals, such as sodium, are soft and can be cut with a knife. while some are very hard such as iron.
