Recent questions tagged properties-of-pure-substances

$10$ kg of water at $300$ K is poured into a bucket containing $10$ kg of water at $350$ K . Heat capacity of water is $4.2 \mathrm{~kJ} / \mathrm{kg}$. K . Neglecting an...

The equation of state for a non-ideal gas is\[\frac{P v}{R T}=1+B P\]where $P$ is pressure, $v$ is specific volume, $R$ is the specific gas constant, $T$ is temperature, ...

Consider the following data from a Brayton cycle.Enthalpy at inlet to turbine; $1400 \mathrm{~kJ} / \mathrm{kg}$Enthalpy at exit of turbine: $880 \mathrm{~kJ} / \mathrm{k...

An ideal gas undergoes a series of reversible steady state, steady flow processes between states $1,2$, and $3$. Process $1 \rightarrow 2$ satisfies the relation $P+800 v...

The melting point of a substance at $1$ bar is $273$ K . The following property data is available for this substance at $1$ bar.Density of the solid phase$900 \mathrm{~kg...

Air $\text{(assumed as an ideal gas)}$ with a mass flow rate of $2.5 \mathrm{~kg} / \mathrm{s}$ enters a horizontal nozzle at $350 \mathrm{~K}, 350 \mathrm{kPa}$ with a v...

$100$ moles of moist air at $70 \%$ relative humidity is cooled from $70^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ at a constant pressure of $1$ bar . The vapour pre...

A rigid insulated tank containing an ideal gas at $300$ K and $1$ bar is being filled from an external pressurized line supplying the same gas at $300$ K and $10$ bar. Wh...

A piston-cylinder system contains $2$ kg of wet steam at $90^{\circ} \mathrm{C}$ with quality of $0.1$. The piston is loaded with a linear spring. The steam expands to $8...

Q. 51 A metal has a certain vacancy fraction at a temperature of $600 \mathrm{~K}$. On increasing the temperature to $900 \mathrm{~K}$, the vacancy fraction increases by ...

\begin{tabular}{l|l}Q.59 & Specific heat $\left(C_{v}\right)$ of a material was found to depend on temperature as shown \\below. Which of the following statement(s) is/ar...

\begin{tabular}{|l|ll}Q.88 & $\mathbf{A}$ & \begin{tabular}{c}The number of properties required to fix the state of a system is given by \\'state postulate'. \\$\mathbf{R...

\begin{tabular}{|c|c|}\hline Q. 90 & \begin{tabular}{l}A tank of volume $V$ contains homogeneous mixture of two ideal gases, A and B at \\a temperature $T$ and a pressure...

\begin{tabular}{|l|l|}\hline Q.93 & Adiabatic bulk modulus of a substance is defined as \\\hline& $-\frac{1}{v}\left(\frac{\partial v}{\partial P}\right)_{T}$ \\\hline& $...

\begin{tabular}{|c|c|}\hline Q. 94 & \begin{tabular}{l}An insulated rigid closed tank of $2 \mathrm{~m}^{3}$ internal volume contains saturated liquid- \\vapor mixture of...

Q. 96 Air at $400 \mathrm{~K}$ and $200 \mathrm{kPa}$ is heated at constant pressure to $600 \mathrm{~K}$. Assuming that the internal energy is a function of temperature ...

\begin{tabular}{|c|c|}\hline Q. 97 & \begin{tabular}{l}A rigid closed tank having a volume of $2 \mathrm{~m}^{3}$ contains $0.1 \mathrm{~m}^{3}$ of saturated liquid \\wat...

\begin{tabular}{l|l}Q. 99 & \begin{tabular}{l}A $5 \mathrm{~kg}$ metal block $\left(c_{p}=0.5 \mathrm{~kJ} / \mathrm{kg}-\mathrm{K}\right)$ at $373 \mathrm{~K}$ is submer...

Q. 101A piston-cylinder device initially contains $1 \mathrm{~m}^{3}$ of air at $200 \mathrm{kPa}$ and $25^{\circ} \mathrm{C}$. Air expands at constant pressure while a h...

Q. 103 A rigid tank of $2 \mathrm{~m}^{3}$ internal volume contains $5 \mathrm{~kg}$ of water as a saturated liquid-vapor mixture at $400 \mathrm{kPa}$. Half of the mass ...