Highest ionization energy to lowest: N, P, As, Sb.
Answer:
D. Malleability
Explanation:
Gold is made up of the element Au and it is a metal.
Pyrite is iron sulfide and it is a non-metal.
- They have very similar appearance to such an extent that pyrite is widely called the fool's gold.
- To distinguish between the two, we simply explore their metallic properties.
- Gold is malleable. Pyrite is not. It will crumble under pressure.
Answer:
See explanation
Explanation:
2. Newton's law of universal gravitation states that every object in this universe is attracted to every other object, based on their mass and distance from each other. In the case of the Earth and Moon, for instance, since they are both very massive objects separated by a large distance, they have a gravitational pull strong enough to stay together but not strong enough to smash into each other.
3. Newton's first law of motion states that an object in motion will stay in motion, and that an object at rest will stay at rest unless acted upon by an outside force. If the court is flat and mostly frictionless, and the ball is already rolling with a certain velocity, then there is no reason for that ball to stop rolling from the point of view of this law.
4. Greater mass increases the attraction of gravity proportionally, while greater distance decreases the attraction exponentially. Therefore, a larger distance makes the force of gravity weaker than a mass expanding at a proportionally fast rate.
Hope this helps!
Explanation:
What happens during gas exchange in the alveoli?
These are called alveoli. They inflate when a person inhales and deflate when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
What is the role of alveoli in gas exchange?
The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.
Answer:
107.828 amu
Explanation:
Firstly, we need to know the percentage abundance of the second isotope. Since there are 2 naturally occurring isotopes, the percentage abundance of the second isotope will be 100 - 53.84 = 46.16%
Now we go on to deduce the isotopic mass. We do this by multiplying the percentage compositions by the masses.
53.84/100 * 106.9051 = 57.558 amu
46.16/100 * 108.9048 = 50.270 amu
The atomic mass is thus 57.558 + 50.270 = 107.828 amu
