In general chemistry, isotopes are a group of substances that belong to the same element. An element is characterized in the periodic table by their atomic number, which is the number of protons in an atom. Therefore, these substances have the same atomic numbers, but differ in mass numbers. Mass number is the sum of the number of protons and neutrons in the nucleus of an atom.
To determine the atomic weight of an element, you take the average weight of all the existent isotopes of that said element. The calculation would require to multiply the exact mass of the isotope to its abundance. Then, sum them all up.
Atomic weight = 98(0.18) + 112(0.82)
Atomic weight = 109.48 amu
Explanation:
In nitrate ion that is ,have negative charge on overall ion. Negative charge on the one oxygen atom is de-localized to other oxygen atoms present in the molecule of a nitrate ion. Due to this resonance nitrate ions get stabilized.
For resonance structures for the nitrate ion, refer to image attached.
Answer:
See explanation below
Explanation:
You can tell that both 10.0 L and 98kPa are both initial values because they're at a "constant" temperature. You can also tell that 86kPa is the final/second value because the pressure "drops" to that value. Lastly, the "new" volume would also be the final/second value because it's "new". Hope this helps!
Answer:
I think the answer is c I'm not sure but probaly dont put c if your. ot sure try looking up the answers that helps me alot through my word
Answer: The pressure exerted by the gas, in atm is 1.092
Explanation:
According to the ideal gas equation:'
P = Pressure of the gas = ?
V= Volume of the gas
T= Temperature of the gas = (0°C = 273 K)
n= moles of gas =
R= Value of gas constant = 0.0821 Latm/K mol
as
where d is density
Thus pressure exerted by the gas, in atm is 1.092