A scientist heats an unknown substance in a closed system. The graph shows the change in the temperature over time. During Wich period is the substance changing sate?

The wilson chamber is used to study: direction, speed, and distance of radioactivity the intensity of radiation the appearance of individual atoms all of the above

1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper