Dalton's law states that the total pressure exerted by a mixture is the sum of the pressures exerted
independently by each gas in the mixture and that each gasses pressure, or partial pressure, is
directly proportional to its percentage in the mixture. For example:
Gas
Nitrogen
Oxygen
Carbon dioxide
Water
Atmosphere
Alveoli
Percentage; PP (mmHg) Percentage; PP (mmHg)
78.6; 597
74.9;
569
20.9; 159
13.7; 104
0.04; 0.3
5.2; 40
0.46; 3.5
6.2; 47
100% 760 mmHg
100% 760 mmHg
a) What would the partial pressure of each of these gases be at high elevations, where the external pressure is
500 mmHg? If we increased the pressure to 1000mmHg, what are the new partial pressures (PP)? What would
happen to the partial pressure if a person was given 70% oxygen (at sea level)? How would each of these
scenarios affect external respiration (i. e. breathing)?

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.