Answer:
22.4L
Explanation:
The following data were obtained from the question:
P = 1atm
T = 273K
n = 1mole
R = 0.08206 L∙atm/mol∙K
V =?
PV = nRT
V = nRT/P
V = (1 x 0.08206 x 273)/1
V = 22.4L
Answer: days
Explanation: controlled variable is that they put it in 2 jars for 2 days one with a lid and one with no lid. dependent is how long it was there (2) days. Independent is you left it in one place for the whole 2 days. i think.
3. Other names for S- waves are secondary waves, shear waves, and sometimes elastic S-waves. Other names for P-waves are primary waves and compressional waves.
4. You need 3 stations, because scientists find the difference between the arrival times of the primary and the secondary waves at each of the 3 stations, then the time difference is used to determine the distance of the epicentre from each station. The greater the difference in time, the further away the epicentre is. A circle is drawn around each station, with a radius corresponding to the epicentre’s distance from that station. The point where the three circles meet is the epicentre. If you only had two stations, you could only predict the epicentre, as the point where all three circles meet wouldn’t be complete, you’d have to try and estimate where the third one would intercept. This would greaten the chance of error and isn’t as accurate.
Hope this helps!
Answer:
The ionization energy (in kJ/mol) of the helium ion is 21,004.73 kJ/mol .
Explanation:
Z = atomic mass
n = principal quantum number
Energy of the electron in n=1,
Energy of the electron in n = ∞
Ionization energy of the 
ion:
To convert in into kj/mol multiply it with 
The three particles found in an atom are the protons, neutrons and electrons. Protons have a positive charge. Electrons have negative charge. Lastly, neutrons have no net electrical charge. Protons and neutrons are much heavier than electrons and are located in the center of the atom.
