How many grams of solid calcium hydroxide are in 250mL of a 1. 5M solution

In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer

Kelly has come up with an explanation for why her sister is sometimes in a good mood and other times in a bad mood. she speculates that it is based on the hours of sleep her sister got the previous night. this explanation for her sister's behaviors is an example of a(n)