Explanation:
When a substance or solution has pH equal to 7 then it is known as a neutral solution. And a solution with pH more than 7 is basic in nature.
Antacid is a base that has chemical formula 
and it is also known as magnesium hydroxide.
Hence, an antacid has pH greater than 7 (making it basic) so that it can neutralize the acid.
Therefore, when excess of acid is formed in the stomach then there occurs more hydrogen ions. Due to which pain is felt in the stomach and in this situation when an antacid is consumed then it releases hydroxide ions as it is a base due to which acid gets neutralized and we feel relieved.
Hence, we can conclude that the pH of an antacid solution that is used to neutralize excess stomach acid is more than 7.
Inter molecula force
1- hydrogen bond
2- ion bond
3- dipole dipole
4- dipole bond or van der wael
but not all dipole dipole has the same strength
Answer:
0.5 mol
Explanation:
Given data:
Number of atoms of He = 3.01 ×10²³
Number of moles = ?
Solution:
Avogadro number:
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.02 × 10²³ is called Avogadro number.
1 mole = 6.02 × 10²³ atoms
3.01 ×10²³ atoms × 1 mol / 6.02 × 10²³ atoms
0.5 mol
Answer:
i i cant help youu withh thatt srry i i juss dont knoww whatt to say !!!!! GO TO SOCRATICCC ..!!!!!!!!!!!!!$$!$!
Answer:
2.5x10^–3 mole.
Explanation:
Data obtained from the question include:
Volume of solution = 25mL
Molarity of HNO3 = 0.1M
Mole of HNO3 =..?
First, we'll begin by converting 25mL to L. This can be achieved by doing the following:
1000mL = 1L
Therefore, 25mL = 25/1000 = 0.025L
Now, we can obtain the number of mole of HNO3 present in the solution as follow:
Molarity = mole /Volume
Mole = Molarity x Volume
Mole = 0.1 x 0.025
Mole = 2.5x10^–3 mole.
Therefore, 2.5x10^–3 mole of HNO3 is present in the solution.
