One liter of air contains about 0.21 L of oxygen. When filled, the human lungs hold about 6.0 L of air. How much oxygen is in the lungs when they are filled with air? (Round off to the nearest hundredths place.)

Molecules made from units of identical compounds linked by covalent bonds are called

Identify the following as abiotic or biotic. A paramecium swimming in a lake

How are energy and work related? A. Energy is the force needed to do work B. Work times energy is force C. Energy is the capacity to do work D. Work and energy are the same

0.25 grams of magnesium chloride are dissolved to make 50 milliliters of solution. What is the molarity of the solution?

Explain the law of conservation of energy

1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?

The pH of the acid in the stomach is 2. When a person has heartburn, the acid in their stomach is coming up the esophagus (lower throat) and burning the lining of the esophagus. Why would a person take an Alka Seltzer tablet for heartburn?

Calculate the photon energy (in joules) for the light emitted from the hydrogen atom if ninitial = 4 and nfinal = 2.