You breathe in 3.0 L of pure oxygen at 298 K and 1,000 kPa to fill your lungs. How many moles of oxygen did you take in? Use the ideal gas law: PV = nRT where R=8.31 L-kPa/mol-K

A. 0.05 MOLE

B. 1.21 MOLES

C. 2.42 MOLES

D. 20.0 MOLES

Which of the following groups contains mostly radioactive elements? Question 5 options: nonmetals alkaline earth metals halogens inner transition metals

When we eat, how does it fill us up?

How is a scientific experiment different from other investigations

How are inner and outer planets different?

Microscopic view of particles in a solid a liquid and gas

A population of crabs live on a light-colored sandy beach. In this environment there is a population of birds that eat the crabs. One year, there is a volcanic eruption near the beach and dark volcanic ash covers the beach.

It would take one light year to travel to the sun? True or false?

A specific, electrically neutral atom of boron has 5 protons, 5 electrons, and 6 neutrons. what is the mass number of this atom of boron? 6 5 11 16

When does hail happen?

For the reaction, calculate how many moles of the product form when 0.012 mol of O2 completely reacts. Assume that there is more than enough of the other reactant. 4Al (s) + 3O2 (g) →2Al2O3 (s) Express your answer using two significant figures.