Is heat, gas production, and color change can all be evidence of chemical change

How much heat is required to evaporate a gram of water at room temperature?

Compare the molar concentration of the crystal violet solution to that of the sodium hydroxide solution. approximately how much more concentrated is the sodium hydroxide? justify your answer.

What mass of sucrosse, C12H22O11, is needed to make 500mL of a 0.20 M solution?

The diagram is a representation of the electron sea model which statement best describes what is happening in this model? A. The electrons are floating to the top of the nuclei of metal atoms. B.

Taryn has a 90-gram sample of ethanol, which has a specific heat of 2.46 J/g°C. How much heat energy is required to raise the temperature of her sample from 20°C to 35°C?

What is the Celsius equivalent of 212°f

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?