C= comcentration
V= volume
C1*V1=C2*V2
3.5M*225.mL = xM*750 mL
x=(3.5*225/750) =1.05M≈1.1M
The 0.05 moles of
required to make 1 L of solution in which the
concentration is 0. 15 M.
Calculation,
The Sodium phosphate dissolves as follows:
→ 
To make 1. L of solution in which the
concentration is 0. 15 M
The morality of
= 0.15 M = number of moles / volume in lit
The morality of
= 0.15 M = number of moles /1 Lit
number of moles of
= 0.15 mole
The mole ratio is 1: 3
It means, the 1 mole of
required to form 3 mole of
So, to form 0.15 mole of
= 1×0.15 / 3 moles of
required.
Hence, number of moles of
required = 0.05 moles.
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Answer:
No
Explanation:
We cannot identify an atom without knowing numbers of protons in the atom.
The number of neutrons is the amount of neutrally charged particles in an atom. These subatomic particles occupy the dense nucleus with the protons.
- To determine an atom, we use their atomic numbers.
- Atomic number is the number of protons in an atom.
- Protons are the positively charged particles in the atom.
- The periodic table of elements is arranged by the atomic number of an element.
1) Balanced chemical reaction:
2HClO₄(aq) + K₂CO₃(aq) → K₂CO₃(aq) + CO₂(g) + H₂O(l).
2) Balanced chemical reaction:
HC₂H₃O₂(aq) + LiHSO₃(aq) → LiC₂H₃O₂(aq) (aq) + SO₂(g) + H₂O(l).
3) Balanced chemical reaction:
(NH₄)₂SO₄(aq) + Ca(OH)₂(aq) → CaSO₄(s) + 2NH₃(g) + 2H₂O(l).
CaSO₄ (calcium sulfate) is insoluble in water.