How did oxygen (O2) get into Earth's atmosphere?

Calculate the pressure, in atmospheres, exerted by each of the following: a) 2.50 L HF containing 1.35 mol at 320.0 G b) 4.75 L NO2 containing 0.86 mol at 300.0 K c) 5.50 * 104 mL CO2 containing 2.15 mol at 57°C

What is the net force on an object when you combine a force of 10n north with a force of 5n south?

What does the zeroth law of thermodynamics allow us to define? A. pressure B. work C. latent energy D. thermal energy E. temperature

Which of the following is an example of potential energy? Group of answer choices Water turning a turbine for electricity. Water in the clouds. Water falling to Earth as rain. Water evaporating into the atmosphere.

What is current measured in

How are Saturn and Uranus similar? Neither planet has a tilted axis. They both rotate backwards. They both have rings. They are both found inside the asteroid belt.

What physical property makes the red light different from blue light, or radio waves different from microwaves?

describes how the color and texture of a surface affect absorption and reflection of solar radiation?

What does infrastructure refer to? process by which a nation improves the economic, political, and social well-being of its people level of farming in which a person raises only enough food to feed his or her family services and facilities necessary

Sophee left her house on her bike and traveled 3 kilometers north, 5 kilometers east, 3 meters south, then 5 meters west arriving home in time for dinner. What is her distance and displacement?