Answer:
Explanation:
1. Boiling point
The boiling point of a substance especially a fluid, is that temperature at which it turns from liquid to gas. The boiling point of water for example is 100°C, at this temperature, liquid water changes to vapor which a gaseous form of water.
2. decrease
When the size of a sample increases, the surface area of the sample decreases and so also the solubility. Smaller sized samples have a large surface area through which the solvent can readily surround and dissolve a material. Larger sized particles on the other hand have low surface area and dissolves slowly than expected.
3. Wood has low thermal conductivity, and metal has high thermal conductivity.
The thermal conductivity of wood is very low while that of metals is very high. This why metals will conduct heat away from a heat source and a wood will remain unchanged in terms of temperature.
4. Volume
Volume is an extensive property of a matter that depends on the amount of substance present. Volume is the amount of space a substance occupies. The more the substance, the more the space it occupies. This why 20g of water will have a higher volume compared to 15g of water.
5. Solvent
A solvent is a liquid that dissolves other substances. When solvents dissolves other substances, they form a solution.
I only knwi one way which is if water evaporates from a mixture
Answer:
covalent bond
Explanation:
they allow donation of electrons
<u>1 mole of oxygen.</u>
Answer:
solution given:
according to the above reaction,1 mole of oxygen is required to react with 2 moles of sodium to form sodium peroxide.
Explanation:
Molecular solids do not ionize into several particles while ionic solids do (to some extent). Since Freezing-point depression is a colligative property, caused by the presence of particles of non-volatile solute (and not on their chemical nature), ionic solids have a multiplicative effect on the change in temperature per unit - i.e. the van't hoff constant, i<span>.
F</span>P depression equation: <span>ΔT=i∗m∗<span>Kb
</span></span>Molecular solids have i=1 always, and ionic solids <span>i≥2.
</span><span>The formula to find the molar mass:
</span>M=<span><span>i∗m∗<span>Kb/</span></span><span>k<span>g <span>solvent</span></span>∗ ΔT</span></span>