Answer:
Mass = 15600 g
Explanation:
Given data:
Number of atoms of oxygen = 5.87 × 10²⁶
Mass of oxygen = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
5.87 × 10²⁶ atom × 1 mole / 6.022 × 10²³ atom
0.975 × 10³ mole
975 mole
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 975 × 16 g/mol
Mass = 15600 g
Dimensional analysis:
5.87 × 10²⁶ atom × 1 mol/6.022 × 10²³ atom × 16 g/ 1 mol = 15600 g
The definition of pseudoscience is collection of beliefs or practices mistakenly regarded as being based on scientific method. which B is very similar to that. I believe the answer is A.
Have a nice day.
The correct option is A.
All the elements in group 1 and hydrogen has only one electron in their outermost shells, thus, they all have similar electron configuration. The elements int the periodic table are grouped in such a way that, all elements in the same group have the same number of electrons in their outermost shells. This is one of the principal reason why hydrogen is grouped with group 1 elements.<span />