A gas expands in volume from 22.1 mL to 70.3 mL at constant temperature. Calculate the work done (in joules) if the gas expands against a constant pressure of 3.80 atm. Enter your answer in scientific notation. ____x10____J

A chemist carefully measures the amount of heat needed to raise the temperature of a 1.54kg sample of C4H8O from 2.1°C to 19.3°C. The experiment shows that 4.33 x 10^4J of heat are needed. What can the chemist report for the molar heat capacity ofC4H8O? Round your answer to 3 significant digits.

A chemist carefully measures the amount of heat needed to raise the temperature of a 1.39 kg sample of C4H₂O from -8.1 °C to 11.7 °C. The experiment shows that 4.58 × 104 J of heat are needed. What can the chemist report for the molar heat capacity of C4H₂O? Be sure your answer has the correct number of significant digits. - 1 .K J. mol - 1 x10 X Ś

A mixture of nitrogen and oxygen gas is expanded from a volume of 47.0L to a volume of 81.0L, while the pressure is held constant at 61.0atm.   Calculate the work done on the gas mixture. Round your answer to 3 significant digits, and be sure it has the correct sign (positive or negative).

A mixture of krypton and hydrogen gas is compressed from a volume of 68.0 L to a volume of 52.0 L, while the pressure is held constant at 82.0 atm. Calculate the work done on the gas mixture. Be sure your answer has the correct sign (positive or negative) and the correct number of significant digits. O kJ x10

A balloon filled with gas is compressed under an external pressure of 3.0 atm from 4.0 L to 1.0 L. How much work (in Joules) is transferred during the compression? 1 Latm= 101.325J

A mixture of helium and hydrogen gas is compressed from a volume of 81.0 L to a volume of 70.0 L, while the pressure is held constant at 34.0 atm. Calculate the work done on the gas mixture. Be sure your answer has the correct sign (positive or negative) and the correct number of significant digits.

A chemist carefully measures the amount of heat needed to raise the temperature of a 639.0 g sample of C,H,N from -8.7 °C to 6.7 °C. The experiment shows that 2.60 × 10* J of heat are needed. What can the chemist report for the molar heat capacity of C,H,N? Round your answer to 3 significant digits. - 1 ·K J• mol х10