Answer:
Explanation:
Arrhenius defined an acid as a substance that interacts with water to produce excess hydrogen ions in aqueous solution.
A base is a substance which interacts with water to yield excess hydroxide ions, in an aqueous solution according to Arrhenius.
Bronsted-Lowry theory defined an acid as a proton donor while a base is a proton acceptor.
Answer:
the number of atoms stays the same as the atoms lose energy to the colder freezer, slow down, get closer together, shrinking the volume
Explanation:
When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.
I hope it helps.
1 mols of Aluminium ion forms 1 mol aluminium phosphate
Molar mass of AlPO_4
Moles of AlPO_4
- 61µg/106
- 0.000061/106
- 5.75×10^{-7}
- 57.5µmol
Moles of Al3+=57.5µmol
Answer:
The answer to your question is 0.415 M
Explanation:
Data
volume of H₂SO₄ = 15 ml
[H₂SO₄] = 0.275
volume of NaOH = 20 ml
[NaOH] = ?
Process
1.- Write the balanced chemical reaction
H₂SO₄ + 2NaOH ⇒ Na₂SO₄ + 2H₂O
2.- Calculate the molar mass of H₂SO₄ and the molar mass of NaOH
molar mass of H₂SO₄ = 2 + 32 + (16 x 4) = 98g
molar mass of NaOH = 23 + 16 + 1 = 40 g
3.- Calculate the moles of H₂SO₄ in 15 ml
moles = Molarity x volume
moles = 0.275 x 0.015
moles = 0.0041
4.- Use proportions to calculate the moles of NaOH
1 mol of H₂SO₄ ----------------- 2 moles of NaOH
0.0041 moles ----------------- x
x = (0.0041 x 2) / 1
x = 0.0083 moles of NaOH
5.- Calculate the molarity of NaOH
Molarity = moles/volume
Molarity = 0.0083/0.02
Molarity = 0.415
