Answer:
isotopes
Explanation:
The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.
A. Of a given element have different numbers of neutrons
We know that for an ideal gas:
PV = constant
1000 ml x 1 atm = 473 ml x P atm
P = 2.11 atm
Answer:
potassium sulfate
Explanation:
To determine the cation present, a reagent is added which is able to precipitate one of the suspected cations. This will confirm the presence of that cation or disprove it all together. It is known that sulphates of group 2 elements are insoluble in water. When potassium sulfate is added, barium sulphate will be removed from solution as a white precipitate thus confirming that the solution contains barium ions.
<span>When 2,3-bisphosphoglycerate (2,3-BPG) levels increase, hemoglobin release oxygen.
</span>2,3-bisphosphoglycerate is present in human red blood cells (erythrocyte).
2,3-BPG <span>nteracts with deoxygenated hemoglobin and decrease his affinity for oxygen, so it </span>allosterically<span> promotes the release of the remaining oxygen molecules.</span>