A piece of unknown metal with a mass of 17.19 g is heated to 100.0 °C and is dropped into 25.0 g of water at 24.50 °C. The final temperature of the water is 30.0 °C. What is the specific heat of the metal? = 4.184 J/g °C

A. 6.69 J/g °C

B. 5.75 J/g °C

C. 4.18 J/g °C

D. 0.478 J/g °C

100mg magnesium reacts with 20ml of 1.0m hcl

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram