Answer: Covalent
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This compound is formed between two non metals. Example: 
An ionic compound is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal. Example: 
Answer:
The yield of the purification is 79.7%
Explanation:
Hi there!
5.731 g nickel metal could be produced by the student if the yield of the purification would be 100%. Instead, 4.567 g was obtained. Then, the yield of the purification can be calculated as follows:
4.567 g Ni · (100% / 5.731 g) = 79.7%
The yield of the purification is 79.7%
Have a nice day!
Answer: 50.9g of Fructose
Explanation:
No of moles = Mass (g) / Molar Mass (g/mol)
Moles = 0.283
Molar Mass of Fructose (C6H12O6) = 12 x 6 + 1 x 12 + 16 x 6 = 180g/mol
Mass = ?
Make 'Mass' the subject of formular, we will have;
Mass = Molar Mass x No of moles
= 180g/mol x 0.283
= 50.9g of Fructose
Answer:
The limiting reactant is NaC₂O₄ and the yield of this reaction is 69.52%.
Explanation:
NaC₂O₄ + UO₂(NO₃)₂ + 3H₂O → UO₂(C₂O₄).3H₂O + 2NaNO₃
m (NaC₂O₄) = 0.4031 g MW = 134 g/mol ∴ n = 3.0 mmol
m (UO₂(NO₃)₂) = 1.481 g MW = 396.05 g/mol ∴ n = 3.74 mmol
m (UO₂(C₂O₄).3H₂O) = 1.073 g MW = 412.094 g/mol ∴ n = 2.60 mmol
The limiting reactant is NaC₂O₄
The yield can be given by (2.60/3.74).100% = 69.52%
