Some helium occupies $1200 \mathrm{~ft}^3$ at $70{\degree} \mathrm{F}$. Find the temperature at which its volume will be $600 \mathrm{~ft}^3$.

What $\mathrm{Btu}$ of heat are released when $20.0 \mathrm{~lb}$ of water at $80{\degree} \mathrm{F}$ is cooled to $32{\degree} \mathrm{F}$ and then frozen in an ice plant?

Determine the decrease in volume of $2000 \mathrm{~ft}^3$ of alcohol in a railroad tank car if the temperature drops from $75{\degree} \mathrm{F}$ to $54{\degree} \mathrm{F}$.

Determine the increase in volume of $35 \mathrm{~L}$ of acetone heated from $28{\degree} \mathrm{C}$ to $38{\degree} \mathrm{C}$.

A steel pipe has a cross-sectional area of $127.20$ in $^2$ at $25{\degree} \mathrm{F}$. Calculate its crosssectional area when the pipe is heated to $175{\degree} \mathrm{F}$ .

A brass rod $1.020 \mathrm{~m}$ long expands $3.0 \mathrm{~mm}$ when it is heated. Calculate the temperature change.

Calculate the increase in length of a zinc rod $50.0 \mathrm{~m}$ long at $15.0{\degree} \mathrm{C}$ when it is heated to $130.0{\degree} \mathrm{C}$.

A $42.0\mathrm{~lb}$ piece of steel at $670{\degree} \mathrm{F}$ is dropped into $100 \mathrm{~lb}$ of water at $75.0{\degree} \mathrm{F}$. Find the final temperature of the mixture.

Some methane occupies $1575 \mathrm{~L}$ at $45{\degree} \mathrm{C}$. Calculate its volume at $15{\degree} \mathrm{C}$.

A block of copper is heated from $20.0{\degree} \mathrm{C}$ to $80.0{\degree} \mathrm{C}$. Determine the heat absorbed by the copper if its mass is $60.0 \mathrm{~g}$ .

Calculate the joules of heat which are absorbed by an electric freezer in lowering the temperature of $1850 \mathrm{~g}$ of water from $80.0{\degree} \mathrm{C}$ to $10.0{\degree} \mathrm{C}$ .

Determine the heat flow in $15 \mathrm{~min}$ through a $0.10-\mathrm{cm}$-thick copper plate with crosssectional area $150 \mathrm{~cm}^2$ if the temperature of the hot side is $990{\degree} \mathrm{C}$ and the temperature of the cool side is $5{\degree} \mathrm{C}$.

Determine the thermal conductivity of a piece of building material $0.25 \mathrm{~in}$. thick that has an $R$ value of $1.6 \mathrm{~ft}^2{ }{\degree} \mathrm{F} / \mathrm{Btu} / \mathrm{h}$.

A coal sample yields $1.25 \times 10^4 \mathrm{~Btu} / \mathrm{lb}$. Calculate the foot-pounds of work resulted from burning $1.00$ ton of this coal.