Which color does barium nitrate emits in a flame test? a. yellow b. orange c. green d. blue ​

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

Determine type of reaction & predict the product c3h12+o2 =

In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged.