A 2.0 L sample of helium is under 760 mmHg of pressure and has a temperature of 300k, if the pressure is raised to 1520 mmHg and the temperature is raised to 400 K, what will be the new volume of gas?

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Compare and contrast physical changes with chemical changes.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j