It would had to have melted in order to change the properties from a solid into a liquid. It also depends on the type of solid wheither a chemical or a ice cube. If it was a ice cube if would dilutte the liquid solution and changes the taste ot texture (feel) if it was a chemical the properties could change the liquid into a solid only depending on th type of chemical. EX..Liquid Nitrogen and a piece of raw chiken the outcome after putting the chicken in the nitrogen would be frozen. Because the chemical Nitrogen freezes the particles which makes the chicken frozen.
NACL, or salt, is an ionic compound made up of a cation from a base and an anion from an acid. (Water being the base.) Your answer would be the last option, "Formed due to reaction of acid with water."
Solubility is the property of the solute to dissolve itself in a solvent. The states of the solute and solvent may range from solid, liquid, and gas. Since the statement above states a solution instead of a solvent. The answer is false. solution is composed both of the dissoved solute and solvent.
Answer: 4.18925 kJ heat is needed to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50°C.
Explanation:
Temperature of Solid
Melting temperature of Solid ![C_2H_5OH=114^oC=159 K](https://tex.z-dn.net/?f=C_2H_5OH%3D114%5EoC%3D159%20K)
Temperature of liquid ![C_2H_5OH=-50^oC=223K](https://tex.z-dn.net/?f=C_2H_5OH%3D-50%5EoC%3D223K)
Specific heats of solid ethanol = 0.97 J/gK
Specific heats of liquid ethanol = 2.3 J/gK
Heat required to melt the the 25 g solid
at 159 K
= 159 K - 138 K = 21 K
![Q_1=mc\Delta T= 25\times 0.97J/gK\times 21 K=509.25 J](https://tex.z-dn.net/?f=Q_1%3Dmc%5CDelta%20T%3D%2025%5Ctimes%200.97J%2FgK%5Ctimes%2021%20K%3D509.25%20J)
Heat required to melt and raise the temperature of
upto 223 K
= 223 K - 159 K = 64 K
![Q_2=mc\Delta T= 25\times 2.3J/gK\times 64 K=3680 J](https://tex.z-dn.net/?f=Q_2%3Dmc%5CDelta%20T%3D%2025%5Ctimes%202.3J%2FgK%5Ctimes%2064%20K%3D3680%20J)
Total heat to convert solid ethanol to liquid ethanol at given temperature :
(1kJ=1000J)
Hence, 4.18925 kJ of heat will be required to convert 25.0 g of solid ethanol at -135 °C to liquid ethanol at -50°C.
Mass/volume = density. We know the volume (5 cm cubed) and the density (8.96). We plug these into the equation to find the mass:
M/5 = 8.96
M = 44.8 grams