Consider the reaction ca(oh)2(s)→cao(s)+h2o(l) with enthalpy of reaction δhrxn∘=65. 2kj/mol what is the enthalpy of formation of cao(s)?.

What is a good tip to follow in the day you take the aspire test or psat

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.