When food burns, energy is lost.
When food is consumed by the body, it is broken down into simple sugars, carbohydrates, and fats. (Energy gained)
Periodicity is best defined as A. <span>the fact that elements increase in atomic mass in a regular way the repeating nature of physical and chemical properties. This is evident in the periodic table where elements belonging to one column has the same properties.</span>
Answer:
Explanation:
V1= 600.0 mL
T1= 293 K
V2 unknown
T2= 333K
Charles law V1*T2=V2*T1
where V1 and T1 are the initial volume and temperature. V2 and T2 are the final temperature and volume.
V2=(V1*T2)/T1 = ( 600.0*333)/293= 682 mL (with significant figures)(681.911 mL before signifcant figures.)
Answer:
1. The first three Hydrogen atoms have the same number of protons
2. The first three Hydrogen atoms are also isotopes of each other
3. The third Hydrogen atom and the first Helium atom have the same mass number
4. The second Carbon atom and the first Oxygen atom both have the same number of neutrons
Explanation:
1. The number on the top left tells us the mass number while the bottom left number tells us the atomic number. The atomic number is equal to the number of protons.
2. An isotope is when there is an equal amount of protons, but a different number of neutrons. Neutrons can be calculated by taking the mass number and subtracting the atomic number.
3. As said before, the mass number is the number on the top left of each symbol. Look for atoms with the same mass number.
4. Neutrons can be calculated by taking the mass number and subtracting the atomic number. The second Carbon atom and the first Oxygen atom both have six neutrons. 14 - 6 = 8 neutrons for the second Carbon and 16 - 8 = 8 neutrons for the first Oxygen atom.