Can anyone help me with my one question on my stuff?
assume you have 1 mole (or any other number, it doesn't matter). Mass = 206.98 g/mole. This is straight from the molar mass so that's why I like to use 1 mole
From the chemical formula, 1 mole of Ca(ClO3)2 contains 6 moles of oxygen atoms.
Mass of 6 moles of O atoms = 6 moles * 16 g/mole = 96 g
mass % oxygen = 96 g / 206.98 g * 100 = 46.4%.
You could also do it on a mole percent. 1 mole of Ca(ClO3)2 contains 9 moles of atoms.
6 moles of these are oxygen atoms so the mole % = 6 moles / 9 moles * 100 = 66.7 mole %
If you mean percent by weight or percent by composition? Ca(ClO3)2 is 67% O by composition (number of atoms) and, as calculated by Ricki, 46% by weight.
Answer:
Molecules
Explanation:
If you had more than one atom chemically bonded together, then regardless of the types of atoms that are bonded, you're going to have a molecule regardless.
The whole Activity , poem and paragraph is missing in the question.
Answer:
(1) Liquid A
(2) Solid A
Explanation:
Using this part of the given poem
Substances and mixtures behave differently,
During boiling and melting most especially
Boiling point of substance is fixed while mixture is not
Substance melts completely but mixture does not
The boiling point of the Pure substance remain fixed after reaching its boiling point this is shown by Liquid A
Solid A is melting completely so Solid A is a pure substance.
