A 20-kg curling stone is sliding in a positive direction at 4 m/s. A second curling stone is sliding at the same speed but in the opposite direction. What is their net momentum?

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg