A calcium bromide for this right on a quiz
Because you introduce two reactants, causing them to produce a new chemical product. :)
Answer:
Explanation:
Given parameters:
Mass of ionic compound = 0.3257g
Mass of AgBr precipitate = 0.7165g
Unknown:
Percent mass of Br in the original compound.
Solution
The percent mass of Br in original compound =
Now we have to find the mass of Br⁻:
We must note that the same mass of Br⁻ would move through the ionic sample to form the precipitate.
Mass of Br in AgBr =
Mass of Br = x 0.7165
Mass of Br = 0.426 x 0.7165 = 0.305g
Percent mass of Br = x 100 = 93.7%
Chemical Bonding, my dude.
Answer:
33atoms
Explanation:
An atom is the smallest particle that can take part in a chemical reaction.
The given compound is:
3(NH₄)₂S
Here we have 3 moles of (NH₄)₂S ;
So:
Total number of atoms:
2 atoms of N
2 x 4 atoms of H
1 atom of S
Total = 2 + 8 + 1 = 11 atoms
So;
The total atom = 3 x 11 = 33atoms