Answer: The answer to your question is OD
Hope this helps.
I think the correct answer would be the second option. The volume of 1 mol of gas at standard temperature and pressure would be the same for any gas. If and only if the gas is an ideal gas. This is according to the ideal gas law ( PV = nRT ), at STP ( P = 1 atm T = 273.15 K ) you would calculate the volume of the gas to be 22.4 L. So, 1 mol of any ideal gas would occupy 22.4 L of volume. We calculate as follows:
PV = nRT
V = nRT / P
V = (1 mol ) (0.08205 L-atm / mol K) (273.15 K ) / 1 atm
V = 22.4 L <span />
Answer:
None
Step-by-step explanation:
A high pH is caused by an excess of hydroxide over hydrogen ions.
Hydroxide ions are so small that they pass through the pores of an ordinary filter.
Thus, ordinary filtration has no effect on the pH of water.
False,
The most amazing part of Mendeleev’s periodic table was that he left blank spaces for the elements which were yet to be discovered. He predicted the atomic mass and chemical properties of these yet to be discovered elements.
Answer:
Following are the <span>conjugate acid-base pairs;
1) NH</span>₃ , NH₄⁺
2) CH₃CO₂⁻ , CH₃COOH
Explanation:
According to Brønsted–Lowry acid–base theory an acid is any specie which can donate H⁺. When an acid donates proton it is converted into conjugate base.
Example:
CH₃COOH + BASE → CH₃COO⁻ + Base-H
In above reaction Acetic Acid (CH₃COOH) is acid, and after loosing proton it is converted into conjugate base i.e. Acetate (CH₃COO⁻).
And according to Brønsted–Lowry acid–base theory base is any specie which can accept H⁺. When base accepts proton it is converted into conjugate acid.
Example:
NH₃ + A-H → NH₄⁺ + A⁻
In above reaction Ammonia (NH₃) is a base, and after accepting proton it is converted into conjugate acid i.e. Ammonium (NH₄⁺)