Answer:
Copper, Water, and Oxygen
Explanation:
Because they are compounds and compounds are pure substances <3
The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element.
Answer:
B.false because if the reactant concentration is disturbed the whole reaction will be affected.
Explanation:
Answer:
100.52°C is the boiling point of this solution
Explanation:
In 100 g of solution, we have 8 g of cesium chloride.
Mass of solvent in our solution is 92 g, of water.
Let's determine the molality → mol/kg
Mol of solute → 8 g . 1 mol/ 168.35 g = 0.0475 moles
Mass of solvent → from g to kg → 92 g . 1kg / 1000g = 0.092 kg
Molality → 0.0475 mol/0.092 kg = 0.516 m
According to the colligative property, we assume 100 % of ionization in the salt, boiling point for the solution will be:
T° boiling point for the solution = (0.512°C/ m . 0.516 m . 2) + 100°C
T° boiling point for the solution = 100.52°C
Van't Hoff factor = 2
CsCl → Cs⁺ + Cl⁻
Answer:
E) Na₂CO₃(aq) +HCl (aq)
Explanation:
Na₂CO₃(aq) +HCl(aq) ⟶ 2NaCl(aq) + H₂O(ℓ) + CO₂(g)
Salts of alkali metals are generally soluble
A) is wrong.
K₂C₂O₄(aq) + Ba(OH)₂(aq) ⟶ BaC₂O₄(aq) + 2KOH(aq)
Oxalates are generally insoluble.
B) and C are wrong.
Pb(NO¬₃)₂(aq)+ H₂SO₄ (aq)→ PbSO₄(s) + 2HNO₃(aq)
CaCO₃(s) + H₂SO₄(aq) ⟶ CaSO₄(s) + H₂O(ℓ) + CO₂(g)
Sulfates are generally soluble, but PbSO₄ and CaSO₄ are important exceptions.
D) is wrong.
AgNO₃(aq) + NaI(aq) ⟶ AgI(s) + NaNO₃(aq)
Iodides are generally soluble. AgI is an important exception.