Part A A weather balloon is inflated to a volume of 25.5 L at a pressure of 738 mmHg and a temperature of 31.4 °C. The balloon rises in the atmosphere to an altitude where the pressure is 390. mmHg and the temperature is -15.6°C. Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude. | ΑΣφ. Vonlloon = Submit Request Answer What is the pressure if the volume of the container is maintained constant and the temperature is raised to 331 °C? Express the pressure in atmospheres to three significant figures. P = atm Submit Request Answer What is the density (in g/L) of hydrogen gas at 20 °C and a pressure of 1655 psi? Express your answer in grams per liter to three significant figures. • View Available Hint(s) ? d = 8/L Submit

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.