How would scientists most likely describe the system of the Earth in regard to energy? 1. Earth is an isolated closed system because energy only escapes the system as heat travels into space.

2. Earth is an isolated closed system because the atmosphere allows energy from the Sun to enter as heat.

3. Earth is an open system because the atmosphere stops energy from escaping into space.

4. Earth is an open system because heat energy from the Sun enters through the atmosphere.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

answer seismograph;