At 200°C Kc = 1.4x10-10 for the reaction N2O(g) + NO2(g) 3NO(g) If 0.200 mol of N20 and 0.400 mol of NO2 are placed in a 4.00 L container, what would the concentration of NO be if this equilibrium were established?​

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which element is least likely to undergo a chemical reaction