Calculate the mass of solid sodium that's needed to fully react with 4.0 l of chlorine gas at stp.
_na ₍s₎+_cl₂₍g₎ →_nacl₍aq₎

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. moss campion is one of the plants found in the alpine biome. it has small leaves and a cushion shape that protect it from the wind and freezing temperatures in the alpine. how has the moss campion adapted to enable its survival in the alpine biome? a. waxy needles b. cone-shaped c. thin trunks d. low-growing