What we can actually do is to find the number of moles of Ca.
moles Ca = 0.72 g / (40.08 g/mol) = 0.018 mol
From the given choices, we can all see that there are 1 mol of compound
per 1 mole of Ca. Therefore the actual moles of compound is also 0.018 mol.
From this, calculate the mass and the answer is the one which will give 2 g.
Answer:
D. CaCl2
To keep the atom balanced in the air
Work, Energy, and Power. The work is the product of the force and the displacement.
A standardized test of what you want to do with your friends and you get to know what you think you want to be tre
Answer:
1. 36
2. Two
Explanation:
The Lewis structure shows the valence electrons present in a compound. Usually the valence electrons are shown as dot structures around the symbol of the elements involved in the compound.
For a compound AB4 where B is more electronegative than A and A has 8 electrons in its valence shell, there will be thirty six valence electrons on the outermost shell of the molecule.
There are six electron pair domains present in the molecule, four bond pairs and two lone pairs. The molecule is in a square planar geometry.