Answer:
A.
Liquid
B.
Gas
C.
Gas
D.
Solid
E.
Liquid.
Explanation:
Solids have definite shape and volume and vibrate around a fixed position. Its relative intermolecular forces are very strong which holds its particles in a fixed position.
Liquids takes the shape of the container, that is no definite shape, has fixed volume and its particles move freely but are still attached to each other due to its mildly strong intermolecular forces.
Gases has no shape nor volume but it is highly compressible while its particles move freely in random paths.
Answer:
9.85% is the mass percent
Explanation:
Mass percent can be determined as mass of solute in 100 g of solution
The solution is soda
Sugar is the solute
(mass of solute / total mass of solution) . 100 =
(33 g / 335g) . 100 = 9.85%
Answer:
Part A. The solubility of gases in water increases with increasing temperature.
Part B. Hexane (C₆H₁₄)
Explanation:
Part A
<em>Considering factors that affect that solubility which statement below true?
</em>
- <em>With a few exceptions, the solubility of most solid solutes in water decreases as the solution temperature increases.</em> FALSE. With a few exceptions, the solubility of most solid solutes in water increases as the solution temperature increases.
- <em>The solubility of gases in water increases with increasing temperature. </em>
FALSE. In general, the solubility of gases decreases with increasing temperature.
- <em>The solubility of a gas in any solvent is increased as the partial pressure of the gas above the solvent Increases.
</em> TRUE. According to Henry's law, the solubility of a gas in a liquid is proportional to its partial pressure.
- <em>Substances with similar intermolecular attractive forces tend to be insoluble in one another.</em> FALSE. Substances with similar intermolecular attractive forces tend to be soluble in one another.
Part B
<em>
Which of these is the best solvent for nonpolar solutes?
</em>
<em>acetone (CH₃COCH₃)
</em>
<em>ethanol (CH₃CH₂OH)
</em>
<em>hexane (C₆H₁₄)
</em>
<em>water</em>
There is a general rule that states "like dissolves like", meaning polar is soluble in polar and nonpolar is soluble in nonpolar. Thus, hexane, which is the least polar solvent, would be the best choice for nonpolar solutes.
Answer:
Q = 5036.9 calories
Explanation:
Given that,
Mass, m = 167.9 g
The temperature raises from 25°C to 55°C.
The specific heat of water,c = 4.184 J/g °C
We need to find the heat added to water. We know that,
or
Q = 5036.9 calories
So, 5036.9 calories of heat is added.
