Metalloid is the closest because noble gases are obviously out, nonmetals are terrible conductors, and metals are not malleable
different parts of the sum rotate at different rates
Answer:
possibly because of the malleability of metals
Explanation:
In metallic bonding, electrons are delocalized and move freely among nuclei. When a force is exerted n the metal, the nuclei shift, but the bonds do not break, giving metals their characteristic malleability.
Answer:
ΔHrxn = 239 kj/mol
Explanation:
Given data:
Mass of sodium = 0.230 g
Heat produced = 2390 J
Solution:
Chemical equation:
2Na + 2HCl → 2NaCl + H₂
Number of moles of sodium:
Number of moles of sodium = mass / molar mass
Number of moles of sodium = 0.230 g / 23 g/mol
Number of moles of sodium = 0.01 mol
Enthalpy of reaction:
ΔHrxn = 2390 J / 0.01 mol
ΔHrxn = 239000 j/mol
ΔHrxn = 239 kj/mol
Explanation:
A mixture which shows presence of uniform composition of solute particles into the solvent is known as a homogeneous mixture.
- Distilled water is a clear solution in which there is uniform composition of solute particles into the solution.
- Gasoline is mixture of different compounds which are evenly distributed. Therefore, it is also a homogeneous mixture.
- Wine is also a clear solution in which particles are evenly distributed. Hence, it is a homogeneous mixture.
On the other hand, a mixture which shows non-uniform composition of solute particles into the solvent is known as a heterogeneous mixture.
- Beach sand is a mixture of different particles present in varying composition. Hence, it is a heterogeneous mixture.
- Also, in air there are different gases present in different composition. Mover over, there is presence of fog and smoke into the air. Hence, it is a heterogeneous mixture.
