Aluminum had a specific heat of 0.215 cal/(g °c). when 25.7 cal (108.5 j) of heat is added to 18.4 g of aluminum at 20.0°c, what is the final temperature of the aluminum?

Which of the following statements about acidic water is true? a. acid has no effect on the h, o molecules. b. the solution contains a larger number of oh ions than h, o ions. c. the solution contains a larger number of h, o ions than qh ions. d. the solution contains an equal number of h, o ions and oh ions. none of the above e.

In 2002, the rare earth elements mine in mountain pass, california was closed because

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?