How much energy is required to turn 18 g ice
at 261 k into steam at 444 k?

specific heat of ice = 2.077 j/g·k

specific heat of water (ℓ) = 4.180 j/g·k

specific heat of steam = 2.042 j/g·k

h2o heat of fusion = 6.00 kj/mol

h2o heat of vaporization = 40.6 kj/mol

answer in units of j.

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

List the path of the respiratory system