depending on the answer choices i could possibly answer the question.
10.0 HE
12.0 L He
a mole
The coefficients in a chemical equation represent the amount of moles of each substance involved in the reaction. On a smaller level, it also represents the amount of particles that have to collide or are produced in the reaction. Consider the following example: CH4(g) + 2O2(g) (arrow) 2H2O(l) + CO2(g) The coefficent behind oxygen in the reactants means that 2 molecules of oxygen have to collide with 1 molecules of methane to react. The coefficients in the products mean that this reaction produces 2 molecules of water and 1 molecule of carbon dioxide.
Atomic oxygen has oxidation number 0. Molecular oxygen also has 0 as oxidation number. It would be the same for five oxygen molecules as well.
The number of oxygen atoms is 0,188.10e23.
how many atoms, molecules and ions are present in one mole of a substance
Oxygen is heavier as it has a mass number of 16 whereas hydrogen has a mass number of 1. Both form diatomic molecules (molecules of two atoms) making the formula masses 32 for oxygen and 2 for hydrogen.
2 represents two molecules of silver nitrate. 3 represents the number of oxygen atoms in each molecule of silver nitrate [or the number of oxygen atoms in the nitrate ion].
Plant releases oxygen. Oxygen molecules diffuse. Bear inhales.
There are 4 oxygen atoms in two oxygen molecules.
2O2 in a chemical reaction equation means that there are two moles of O2, or oxygen, molecules.
Assuming you mean oxygen gas, the number of molecules can be found by first finding the number of moles = mass of oxygen (4g) / Molecular mass of oxygen gas (32 g mol-1) This tells us there is 0.125 mol of oxygen gas present. The number of molecules present is given by the number of moles x the avogadro constant (6.022x10^23) So the number of oxygen gas molecules present is equal to 0.125 x 6.022x10^23 = 7.5275x10^22 molecules
ozone
The P50 represents the partial pressure at which the hemoglobin is 50% saturated with oxygen-that is, when there are two oxygen molecules on each hemoglobin molecule.
There is 1 Avagadro number - so, 6.022 x 1023 molecules in 1 mole of oxygen.
Sometimes the coefficient for the oxygen molecule is not a whole number
The coefficients in a chemical equation represent the amount of moles of each substance involved in the reaction. On a smaller level, it also represents the amount of particles that have to collide or are produced in the reaction. Consider the following example: CH4(g) + 2O2(g) (arrow) 2H2O(l) + CO2(g) The coefficent behind oxygen in the reactants means that 2 molecules of oxygen have to collide with 1 molecules of methane to react. The coefficients in the products mean that this reaction produces 2 molecules of water and 1 molecule of carbon dioxide.
Atomic oxygen has oxidation number 0. Molecular oxygen also has 0 as oxidation number. It would be the same for five oxygen molecules as well.
The number of oxygen atoms is 0,188.10e23.