Asample of helium gas has a volume of 620. ml at a temperature of 500. k. if we decrease the temperature to 100. k while keeping the pressure constant, what will the new volume be?
v₁ = 620. ml t₁ = 500. k t₂ = 100. k
use formula - v₁/ t₁ = v₂/t₂

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Which tool is least in predicting weather