Answer:
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Explanation:
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The correct option is D.
An endothermic reaction is a type of reaction that absorb energy from the environment, thus, the energy level of the product is always higher than that of the reactants. During endothermic phase change, the potential energy of the system always increases while the kinetic energy of the system remains constant. The potential energy of the reaction increases because energy is been added to the system from the external environment.
Answer:
B. 39.1 g.
Explanation:
- It is known that every 1.0 mole of any atom contain Avogadros no. of atoms (6.022 x 10²³).
<em>∴ 6.02 x 10²³ atoms are in 1.0 mol of K.</em>
- We need to calculate the mass of 1.0 mol of K using the relation:
<em>∴ </em>mass of K = no. of moles of K x atomic mass of K = (1.0 mol)(39.1 g/mol) = 39.1 g.
The answer is about 1/2 it rises very sloe
Conventional volcanoes are known to erupt after pressure builds up from new magma flowing into the magma chambers that lie below the vents on the Earth's surface.