Answer: the pH moves to 0 on the pH scale
Explanation:
A base is defined as a substance which donates hydroxide ions when dissolved in water and an acid is defined as a substance which donates hydrogen ions in water.
Neutralisation reaction is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule. The 
ions from acid are neutralised by 
ions from base.
Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH of 7.
The first man-made element or artificial element which is produced because it is not found naturally in nature is Technicium, in 1937. Technicium has an atomic number of 43 and atomic mass of 98 g/mol.
Answer:
This bag has been made from introduced materials, but before foreign fibres were used dilly bags were made from bark, leaves, stems, roots, human hair, animal fur and animal sinew.
The number of moles : n = 4.95 x 10 ²⁴
<h3>Further explanation</h3>
Given
2.98E28 molecules of water
Required
The number of moles
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
n = N : No
n = 2.98 x 10²⁸ : 6.02.10²³
n = 4.95 x 10 ²⁴
The mass of sulfur in 49.5 g of CaSO₄ is 11.7 g.
A 23.9 g sample of CaSO₄ is found to contain 7.04 g of Ca and 11.2 g of O. Considering that the sum of the masses of the elements is equal to the mass of the compound, the mass of S in 23.9 g of CaSO₄ is:
There are 5.66 g of S in 23.9 g of CaSO₄. The mass of S in 49.5 g of CaSO₄ is:
The mass of sulfur in 49.5 g of CaSO₄ is 11.7 g.
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